2-Phenyl-1-[4-(2-Aminoethoxy)-Benzyl]-Indole and estrogen formulations

ABSTRACT

The present invention relates to new formulations containing one or more estrogens and 2-Phenyl-1-[4-(2-Aminoethoxy)-Benzyl]-Indole compounds which are useful as estrogenic agents, as well as pharmaceutical compositions and methods of treatment utilizing these compounds, which have the general structures below:

This application claims the benefit of U.S. Provisional Application No. 60/109,809, which was converted from U.S. patent application Ser. No. 09/079,561, filed May 15, 1998, pursuant to a petition filed under 37 C.F.R. 1.53(c)(2)(i).

The present invention relates to the use of new 2-Phenyl-1-[4-(2-Aminoethoxy)-Benzyl]-Indole compounds which are useful as estrogenic agents, in conjunction with estrogens, as well as pharmaceutical compositions and methods of treatment utilizing these compounds.

BACKGROUND OF THE INVENTION

The use of hormone replacement therapy for bone loss prevention in post-menopausal women is well precedented. The normal protocol calls for estrogen supplementation using such formulations containing estrone, estriol, ethynyl estradiol, 17β-estradiol, esterified estrogens, or conjugated estrogens isolated from natural sources (i.e. Premarin® conjugated estrogens from Wyeth-Ayerst) or synthetic estrogens. In some patients, therapy may be contraindicated due to the proliferative effects of unopposed estrogens (estrogens not given in combination with progestins) have on uterine tissue. This proliferation is associated with increased risk for endometriosis and/or endometrial cancer. The effects of unopposed estrogens on breast tissue are less clear, but are of some concern. The need for estrogens which can maintain the bone sparing effect while minimizing the proliferative effects in the uterus and breast is evident. Certain nonsteroidal antiestrogens have been shown to maintain bone mass in the ovariectomized rat model as well as in human clinical trials. Tamoxifen (sold as Novadex® brand tamoxifen citrate by Zeneca Pharmaceuticals, Wilmington, Del.), for example, is a useful palliative for the treatment of breast cancer and has been demonstrated to exert an estrogen agonist-like effect on the bone, in humans. However, it is also a partial agonist in the uterus and this is cause for some concern. Raloxifene, a benzothiophene antiestrogen, has been shown to stimulate uterine growth in the ovariectomized rat to a lesser extent than Tamoxifen while maintaining the ability to spare bone. A suitable review of tissue selective estrogens is seen in the article “Tissue-Selective Actions Of Estrogen Analogs”, Bone Vol. 17, No. 4, October 1995, 181S-190S.

The use of indoles as estrogen antagonists has been reported by Von Angerer, Chemical Abstracts, Vol. 99, No. 7 (1983), Abstract No. 53886u. Also, see, J. Med. Chem. 1990, 33, 2635-2640; J. Med. Chem. 1987, 30, 131-136. Also see Ger. Offen., DE 3821148 A1 891228 and WO 96/03375. These prior art compounds share structural similarities with the present compounds, but are functionally different. For compounds containing a basic amine, there is no phenyl group to rigidify the side chain.

WO A 95 17383 (Karo Bio AB) describes indole antiestrogens with long straight chains. Another related patent WO A 93 10741 describes 5-Hydroxyindoles with a broad range of side chains. WO 93/23374 (Otsuka Pharmaceuticals, Japan) describes compounds sharing structural similarities with those of the present invention, except with the structure referred to as R₃ in the present formulas I and II, below, is defined as thioalkyl and the reference discloses no such compounds having chains from the indole nitrogen having the same structure as the ones provided by the present invention.

In their article Postmenopausal Hormone replacement therapy with estrogen periodically supplemented with antiestrogen, Am. J. Obstet. Gynecol., Vol. 140, No. 7, 1981, pp. 787-792, Kauppila et al. describe their study of postmenopausal estrogen therapy of seven-week estrogen regimens followed by 10-day treatments with the antiestrogen clomiphene citrate.

Also, in their article Comparison of Megestrol Acetate and Clomiphene Citrate as Supplemental Medication in Posmenopausal Oestrogen Replacement Therapy, Arch. Gynecol. (1983) 234:49-58, Kauppila et al. describe combination therapies in postmenopausal women of estrogen with random supplementation of megestrol acetate or clomiphene citrate.

U.S. Pat. No. 4,894,373 (Young) teaches the use of antiestrogens, including clomiphene and its isomers, citrates and derivatives, in the absence of estrogen for treating menopausal symptoms and treating or preventing osteoporosis. U.S. Pat. No. 5,552,401 (Cullinan et al.) describes benzothiophene compounds as useful for the treatment of various medical indications associated with post-menopausal syndrome, and uterine fibroid disease, endometriosis, and aortal smooth muscle cell proliferation, the compounds being used in pharmaceutical formulations optionally containing estrogen or progestin. U.S. Pat. Nos. 5,646,137 and 5,591,753 (both issued to Black et al.) discloses methods of treating osteoporosis with formulations of raloxefine-type arylbenzothiophene compounds in conjunction with a progestin selected from medroxyprogesterone, norethindrone or norethynodrel, or pharmaceutically acceptable salts thereof. U.S. Pat. No. 5,550,107 (Labrie) claims an invention comprising the treatment of breast or endometrial cancer with an antiestrogen together with at least one compound selected from the group of an androgen, a progestin, at least one inhibitor of sex steroid formation, especially 17β-hydroxysteroid dehydrogenase and aromatase activity, at least one inhibitor of prolactin secretion, one inhibitor of growth hormone secretion and one inhibitor of ACTH secretion. U.S. Pat. No. 5,672,609 (Bryant et al.) discloses pyridine compounds useful in treating post menopausal syndrome and formulations therefore containing estrogen or progestin. U.S. Pat. No. 5,534,527 (Black et al.) teaches the use of aroylbenzothiophenes and estrogens in the inhibition of bone loss.

DESCRIPTION OF THE INVENTION

The present invention provides pharmaceutical formulations, and methods for using them, comprising compounds of formulas (I) and (II), below, in conjunction with estrogens, preferably in conjunction with one or more pharmaceutically acceptable carriers or excipients. Among the uses of the present formulations is alleviating the symptoms of post-menopausal syndrome in women, including peri-menopausal and post-menopausal symptoms. The present formulations and methods of treatment can be used to minimize undesirable side effects of estrogen treatment or therapy and may be used to minimize the amounts of estrogen(s) necessary for a particular regimen.

Compounds of the general structure type shown in formulas (I) and (II) are estrogen agonists/antagonists useful for the treatment of diseases associated with estrogen deficiency. The compounds are capable of antagonizing the effects of 17β-estradiol while showing little uterine stimulation when dosed alone.

The present invention includes, in conjunction with one or more estrogens, the use of compounds of formulas (I) or (II), below:

wherein:

R₁ is selected from H, OH or the C₁-C₁₂ esters (straight chain or branched) or C₁-C₁₂ (straight chain or branched or cyclic) alkyl ethers thereof, or halogens; or C₁-C₄ halogenated ethers including trifluoromethyl ether and trichloromethyl ether.

R₂, R₃, R₄, R₅, and R₆ are independently selected from H, OH or the C₁-C₁₂ esters (straight chain or branched) or C₁-C₁₂ alkyl ethers (straight chain or branched or cyclic) thereof, halogens, or C₁-C₄ halogenated ethers including trifluoromethyl ether and trichloromethyl ether, cyano, C₁-C₆ alkyl (straight chain or branched), or trifluoromethyl, with the proviso that, when R₁ is H, R₂ is not OH.

X is selected from H, C₁-C₆ alkyl, cyano, nitro, trifluoromethyl, halogen;

n is 2 or 3;

Y is selected from:

-   -   a) the moiety:

-   -   wherein R₇ and R₈ are independently selected from the group of         H, C₁-C₆ alkyl, or phenyl optionally substituted by CN, C₁-C₆         alkyl (straight chain or branched), C₁-C₆ alkoxy (straight chain         or branched), halogen, —OH, —CF₃, or —OCF₃;     -   b) a five-membered saturated, unsaturated or partially         unsaturated heterocycle containing up to two heteroatoms         selected from the group consisting of —O—, —NH—, —N(C₁C₄         alkyl)-, —N═, and —S(O)_(m)—, wherein m is an integer of from         0-2, optionally substituted with 1-3 substituents independently         selected from the group consisting of hydrogen, hydroxyl, halo,         C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄         acyloxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄         alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H—, —CN—, —CONHR₁—,         —NH₂—, C₁-C₄ alkylamino, di(C₁-C₄)alkylamino, —NHSO₂R₁—,         —NHCOR₁—, —NO₂, and phenyl optionally substituted with 1-3         (C₁-C₄)alkyl;     -   c) a six-membered saturated, unsaturated or partially         unsaturated heterocycle containing up to two heteroatoms         selected from the group consisting of —O—, —NH—, —N(C₁C₄         alkyl)-, —N═, and —S(O)_(m)—, wherein m is an integer of from         0-2, optionally substituted with 1-3 substituents independently         selected from the group consisting of hydrogen, hydroxyl, halo,         C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄         acyloxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄         alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H—, —CN—, —CONHR₁—,         —NH₂—, C₁-C₄ alkylamino, di(C₁-C₄)alkylamino, —NHSO₂R₁—,         —NHCOR₁—, —NO₂, and phenyl optionally substituted with 1-3         (C₁-C₄)alkyl;     -   d) a seven-membered saturated, unsaturated or partially         unsaturated heterocycle containing up to two heteroatoms         selected from the group consisting of —O—, —NH—, —N(C₁C₄         alkyl)-, —N═, and —S(O)_(m)—, wherein m is an integer of from         0-2, optionally substituted with 1-3 substituents independently         selected from the group consisting of hydrogen, hydroxyl, halo,         C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄         acyloxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄         alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H—, —CN—, —CONHR₁—,         —NH₂—, C₁-C₄ alkylamino, di(C₁-C₄)alkylamino, —NHSO₂R₁—,         —NHCOR₁—, —NO₂, and phenyl optionally substituted with 1-3         (C₁-C₄)alkyl; or     -   e) a bicyclic heterocycle containing from 6-12 carbon atoms         either bridged or fused and containing up to two heteroatoms         selected from the group consisting of —O—, —NH—, —N(C₁C₄         alkyl)-, and —S(O)_(m)—, wherein m is an integer of from 0-2,         optionally substituted with 1-3 substituents independently         selected from the group consisting of hydrogen, hydroxyl, halo,         C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄         acyloxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄         alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H—, —CN—, —CONHR₁—,         —NH₂—, C₁-C₄ alkylamino, di(C₁-C₄)alkylamino, —NHSO₂R₁—,         —NHCOR₁—, —NO₂, and phenyl optionally substituted with 1-3         (C₁-C₄) alkyl;         and the pharmaceutically acceptable salts thereof.

The more preferred formulations of this invention are those having, along with one or more pharmaceutical carriers or excipients:

a) one or more estrogens; and

b) one or more compounds selected from the general structures I or II, above, wherein:

R₁ is selected from H, OH or the C₁-C₁₂ esters or alkyl ethers thereof, halogen;

R₂, R₃, R₄, R₅, and R₆ are independently selected from H, OH or the C₁-C₁₂ esters or alkyl ethers thereof, halogen, cyano, C₁-C₆ alkyl, or trihalomethyl, preferably trifluoromethyl, with the proviso that, when R₁ is H, R₂ is not OH;

X is selected from H, C₁-C₆ alkyl, cyano, nitro, trifluoromethyl, halogen;

Y is the moiety

R₇ and R₈ are selected independently from H, C₁-C₆ alkyl, or combined by —(CH₂)p-, wherein p is an integer of from 2 to 6, so as to form a ring, the ring being optionally substituted by up to three substituents selected from the group of hydrogen, hydroxyl, halo, C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄ alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H, —CN, —CONH(C₁-C₄), —NH₃, C₁-C₄ alkylamino, C₁-C₄ dialkylamino, —NHSO₂ (C₁-C₄), —NHCO(C₁-C₄), and —NO₃;

and the pharmaceutically acceptable salts thereof.

The rings formed by a concatenated R₇ and R₈, mentioned above, may include, but are not limited to, aziridine, azetidine, pyrrolidine, piperidine, hexamethyleneamine or heptamethyleneamine rings.

The most preferred compounds of the present formulations are those having the structural formulas I or II, above, wherein R₁ is OH; R₂-R₆ are as defined above; X is selected from the group of C₁, NO₂, CN, CF₃, or CH₃; and Y is the moiety

and R₇ and R₈ are concatenated together as —(CH₂)_(r)—, wherein r is an integer of from 4 to 6, to form a ring optionally substituted by up to three substituents selected from the group of hydrogen, hydroxyl, halo, C₁-C₄ alkyl, trihalomethyl, C₁-C₄ alkoxy, trihalomethoxy, C₁-C₄ alkylthio, C₁-C₄ alkylsulfinyl, C₁-C₄ alkylsulfonyl, hydroxy (C₁-C₄)alkyl, —CO₂H, —CN, —CONH(C₁-C₄)alkyl, —NH₂, C₁-C₄ alkylamino, di(C₁-C₄)alkylamino, —NHSO₂ (C₁-C₄)alkyl, —NHCO(C₁-C₄)alkyl, and —NO₂; and the pharmaceutically acceptable salts thereof.

In another embodiment of this invention, when R₇ and R₈ are concatenated together as —(CH₂)p-, wherein p is an integer of from 2 to 6, preferably 4 to 6, the ring so formed is optionally substituted with 1-3 substituents selected from a group containing C₁-C₃ alkyl, trifluoromethyl, halogen, hydrogen, phenyl, nitro, —CN.

The invention includes sulfate, sulfamates and sulfate esters of phenolic groups. Sulfates can be readily prepared by the reaction of the free phenolic compounds with sulfur trioxide complexed with an amine such as pyridine, trimethylamine, triethylamine, etc. Sulfamates can be prepared by treating the free phenolic compound with the desired amino or alkylamino or dialkylamino sulfamyl chloride in the presence of a suitable base such as pyridine. Sulfate esters can be prepared by reaction of the free phenol with the desired alkanesulfonyl chloride in the presence of a suitable base such as pyridine. Additionally, this invention includes compounds containing phosphates at the phenol as well as dialkyl phosphates. Phosphates can be prepared by reaction of the phenol with the appropriate chlorophosphate. The dialkylphosphates can be hydrolyzed to yield the free phosphates. Phosphinates are also claimed where the phenol is reacted with the desired dialkylphosphinic chloride to yield the desired dialkylphosphinate of the phenol.

The invention includes acceptable salt forms formed from the addition reaction with either inorganic or organic acids. Inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid, nitric acid useful as well as organic acids such as acetic acid, propionic acid, citric acid, maleic acid, malic acid, tartaric acid, phthalic acid, succinic acid, methanesulfonic acid, toluenesulfonic acid, napthalenesulfonic acid, camphorsulfonic acid, benzenesulfonic acid are useful. It is known that compounds possessing a basic nitrogen can be complexed with many different acids (both protic and non-protic) and usually it is preferred to administer a compound of this invention in the form of an acid addition salt. Additionally, this invention includes quaternary ammonium salts of the compounds herein. These can be prepared by reacting the nucleophilic amines of the side chain with a suitably reactive alkylating agent such as an alkyl halide or benzyl halide.

Methods

Compounds of this invention can be synthesized in a general sense according to Scheme 1, below.

The initial indole synthesis is accomplished by heating an appropriately substituted alpha-bromo ketone (b) with the desired aniline (a) in DMF to form the indole (c). The product is then alkylated with a benzyl chloride (e) to give the substituted indole (f). The benzyl chloride (e) can be readily prepared from the aldehyde (d) in 2 steps as given. Product (g) can be prepared from (f) by reduction of the ester, conversion of the alcohol to a bromide, displacement of the bromide with the desired amine in a suitable solvent such as THF or DMF, and finally, deprotection if necessary. Deprotection is necessary when either R₁ or R₂ or both is a protected phenol. The preferred protecting group is a benzyl group which can be conveniently removed by several conventional methods, especially hydrogenolysis.

For the synthesis of compounds with X═H, halogen, trifluoromethyl, cyano, nitro, an alternative synthesis shown in scheme 2 may be preferable. The formation of halogens at the 3-position can be easily performed with such reagents as N-chlorosuccinamide, N-bromosuccinamide, or N-iodosuccinamide. A 3-Iodoindole compound obtained can be used as a precursor to the 3-trifluoromethyl compound by a coupling reaction utilizing a palladium catalyst and bistrifluoromethyl mercury (II). A compound with a cyano group in the 3-position can be prepared by electrophilic cyanation or alternatively the 3-position can be formylated (with a formyl iminium salt, for example) then the formyl group converted to an oxime and subsequently dehydrated to a nitrile. Alternatively, the 3-cyano compound can be synthesized by reaction of the 3-unsubstituted indole with chlorosulfonylisocyanate followed by triethylamine. A compound with the nitro group in the 3-position can be prepared by treating the indole with sodium nitrite and acetic acid. One skilled in the art recognizes these routes are not limiting and other routes are also available.

Synthesis of selected representative examples are given in the following schemes:

The synthesis of analogues with a 3-carbon chain (example No. 166) between the oxygen and the basic amine can be accomplished as shown in scheme 4.

The synthetic procedure shown in scheme 4 may be used for compounds with two carbon chains analogous to example No. 97 in scheme 3. This is shown in scheme 4a for the synthesis of example No. 127.

The synthesis of indoles with alternative substituents (CN, Cl) at the 3-position of the indole both utilize the 3-unsubstituted indole No. 141 for a precursor. The indole is synthesized by the Fisher method utilizing the hydrazone derived from the condensation of 4-benzyloxyacetophenone CAS No. [54696-05-8] and 4-benzyloxyphenylhydrazine CAS No. [51145-58-5]. The hydrazone No. 140 is then cyclized in acetic acid using zinc chloride to afford the desired indole No. 141. This synthesis can be seen in scheme 5.

The synthesis of 3-Chloroindole compounds is demonstrated for example No. 134 and shown, infra, in scheme 6. The indole No. 141 from scheme 5 is chlorinated with N-chlorosuccinamide. The 3-Chloroindole No. 142, thus obtained, is taken to the final product in analogous fashion to that shown in scheme 3.

3-Cyano analogues are synthesized from the precursor indole No. 141 as shown in Scheme 7. Reaction of the precursor indole No. 141 with chlorosulfonyl isocyanate followed by addition of triethylamine yields the 3-Cyanoindole No. 155. The side chain is made by conversion of the benzylic alcohol of CAS No. [111728-87-1] to the benzylic bromide No. 156 using thionyl bromide in THF. The indole is alkylated by the side chain in DMF using sodium hydride to give the intermediate No. 157. This can then be taken to the final product No. 138 in an analogous fashion to that shown in scheme 4.

The compounds of Formulas (I) and (II) are partial estrogen agonists and display high affinity for the estrogen receptor. Unlike many estrogens, however, these compounds do not cause increases in uterine wet weight. These compounds are antiestrogenic in the uterus and can completely antagonize the trophic effects of estrogen agonists in uterine tissue. These compounds are useful in treating or preventing mammal disease states or syndromes which are caused or associated with an estrogen deficiency. This tissue selectivity allows their use for desirable estrogenic activity in certain tissues, such as bone, while limiting that activity in others, such as uterine tissue.

Estrogens useful in the formulations of this invention include estrone, estriol, equilin, estradiene, equilenin, ethinyl estradiol, 17β-estradiol, 17α-dihydroequilenin, 17β-dihydroequilenin (U.S. Pat. No. 2,834,712), 17α-dihydroequilin, 17β-dihydroequilin, menstranol and conjugated estrogenic hormones, such as those in Wyeth-Ayerst Laboratories' Premarin® products. Phytoestrogens, such as equol or enterolactone, may also be used in the present formulations and methods. A preferred embodiment of this invention comprises pharmaceutical compositions and methods of treatment utilizing conjugated estrogenic hormones, such as those in Wyeth-Ayerst Laboratories' Premarin® products, with one or more compounds of Formulas (I) or (III) listed herein. Esterified estrogens, such as those sold by Solvay Pharmaceuticals, Inc. under the Estratab® tradename, may also be used with the present formulations. Also preferred for use with the present invention are the salts of the applicable estrogens, most preferably the sodium salts. Examples of these preferred salts are Sodium estrone sulfate, Sodium equilin sulfate, Sodium 17alpha-dihydroequilin sulfate, Sodium 17alpha-estradiol sulfate, Sodium Delta8,9-dehydroestrone sulfate, Sodium equilenin sulfate, Sodium 17beta-dihydroequilin sulfate, Sodium 17alpha-dihydroequilenin sulfate, Sodium 17beta-estradiol sulfate, Sodium 17beta-dihydroequilenin sulfate, Estrone 3-sodium sulfate, Equilin 3-sodium sulfate, 17alpha-Dihydroequilin 3-sodium sulfate, 3beta-Hydroxy-estra-5(10), 7-dien-17-one 3-sodium sulfate, 5alpha-Pregnan-3beta-20R-diol 20-sodium sulfate, 5alpha-Pregnan-3beta, 16alpha-diol-20-one 3-sodium sulfate, delta(8,9)-Dehydroestrone 3-sodium sulfate, Estra-3beta, 17alpha-diol 3-sodium sulfate, 3beta-Hydroxy-estr-5(10)-en-17-one 3-sodium sulfate or 5alpha-Pregnan-3beta, 16alpha,20R-triol 3-sodium sulfate. Preferred salts of estrone include, but are not limited to, the sodium and piperate salts.

The present compounds of Formulas (I) and (II) are tissue selective compounds having the ability to behave like estrogen agonists, such as by lowering cholesterol and preventing bone loss, or like estrogen antagonists. Therefore, these compounds in the present formulations are useful for treating many maladies including osteoporosis, prostatic hypertrophy, infertility, breast cancer, endometrial hyperplasia, endometrial cancer, endometriosis, cystic glandular hyperplasia, uterine hyperplasia, cervical hyperplasia, benign prostatic hyperplasia, cardiovascular disease, contraception, Alzheimer's disease and melanoma. The formulations of this invention may also be used to treat bone loss resulting from secondary osteoporosis, including that categorized as endocrine in nature, including that resulting from glucocorticoid excess, hyperparathyroidism, hyperthyroidism, hypogonadism, hyperprolactinemia, and diabetes mellitus. The bone loss may also be the drug-induced, such as that resulting from heparin treatments, alcohol consumption, or the use of tobacco, barbiturates or corticosteroids. The drug-induced loss of bone may also stem from treatment with gonadotropin releasing hormone (GnRH or LHRH) or synthetic GnRH antagonists or agonists, such as the leuprolide acetate injectable sold by TAP Pharmaceuticals Inc. under the tradename LUPRON® or the goserelin acetate implant sold by Zeneca Pharmaceuticals under the Zoladex® tradename. Such bone loss may also result from immobilization of the individual, chronic renal failure, malabsorption syndrome, hepatic disease, chronic obstructive lung disease, rheumatoid arthritis, or sarcoidosis.

Additionally, these formulations can be used for hormone replacement therapy in post-menopausal women or in other estrogen deficiency states where estrogen supplementation would be beneficial. The symbiotic activity of the compounds and estrogen(s) of the present methods of treatment are particularly of interest in overcoming the unwanted consequences of estrogen therapy, such as breakthrough bleeding and/or excessive endometrial stimulation, which may lead to endometrial hyperplasia or endometriosis. These formulations, therefore, may be used in methods of treating or preventing excessive estrogenic uterine stimulation in a mammal.

The formulations of this invention may also be used in methods of treatment for bone loss, which may result from an imbalance in an individual's formation of new bone tissues and the resorption of older tissues, leading to a net loss of bone. Such bone depletion results in a range of individuals, particularly in post-menopausal women, women who have undergone hysterectomy/oophorectomy, those receiving or who have received extended corticosteroid therapies, those experiencing gonadal dysgenesis, and those suffering from Cushing's syndrome. Special needs for bone replacement can also be addressed using these formulations in individuals with bone fractures, defective bone structures, and those receiving bone-related surgeries and/or the implantation of prosthesis. In addition to those problems described above, these formulations can be used in treatments for osteoarthritis, Paget's disease, osteomalacia, osteohalisteresis, endometrial cancer, multiple myeloma and other forms of cancer having deleterious effects on bone tissues. Methods of treating the maladies listed herein are understood to comprise administering to an individual in need of such treatment a pharmaceutically effective amount of one or more of the compounds of Formulas (I) and (II), or a pharmaceutically acceptable salt thereof, in conjunction with a therapeutically desirable amount of an estrogen. This invention also includes pharmaceutical compositions utilizing one or more of the present compounds, and/or the pharmaceutically acceptable salts thereof, along with one or more pharmaceutically acceptable carriers, excipients, etc.

Estrogens regulate a number of physiological processes. The primary target tissues for estrogens include the reproductive tract (ovary; uterus; vagina), mammary tissue, skeleton, cardiovascular system and the central nervous system (CNS). The reduction in circulating estrogens results in a number of changes. There is a cessation in reproductive function with an associated amenorrhea, uterine atrophy, and increase in vaginal dryness (lack of keratinization). Mammary tissue becomes relatively quiescent. There is an increase in the rate of loss of bone mass (2-7%) compared to the normal 0.5-1.0%/year that is seen in all individuals over the age of 35. A change in lipid profile occurs with increases in Low Density Lipoprotein (LDL) and decreases in High Density Lipoprotein (HDL) commonly measured and an associated increased risk of a cardiovascular event (heart attack, stroke). Changes in the central nervous system include an increase in vasomotor symptoms (hot flush) and potentially changes in cognition and memory.

Estrogen replacement therapy (ERT) normalizes some of these changes, particularly those associated with the cardiovascular system (reduced LDL, increased HDL, reduced risk of heart attack), the skeleton (maintenance of bone mass, reduced fracture risk), and central nervous system (reduction in frequency and severity of the hot flush). While the reproductive tract responds, it is not all positive. On the positive side, vaginal dryness is alleviated. However, negative uterine responses include hypertrophy and hyperplasia, along with some menstrual-like bleeding. The breast is also affected and there are data correlating exogenous estrogen therapy with an increased risk of breast cancer.

Currently, women with intact uteri are generally not prescribed estrogens alone, but estrogens in combination with a progestin to reduce uterine stimulation. While the risks of endometrial cancer are reduced to non-hormone treated levels, the other side effects of progestins reduce compliance in women on hormone replacement.

The tissue selective estrogen (TSE) compounds of this invention provide positive skeletal and cardiovascular affects similar to estrogens, without the negative effects associated with the uterus and breast. The combinations of TSEs and estrogens derive the positive effects of estrogens on the CNS, bone and cardiovascular, with the combination providing complimentary or additive effects on the bone and cardiovascular systems. The major variable is the TSEs ability to block estrogenic influence on the uterus and breast, which are the two major negative effects of unopposed estrogens.

It is understood that the dosage, regimen and mode of administration of these compounds of Formulas (I) and (II) will vary according to the malady and the individual being treated and will be subjected to the judgment of the medical practitioner involved. It is preferred that the administration of one or more of the compounds herein begins at a low dose and be increased until the desired effects are achieved. Similarly, it will be understood that the dosage(s) of the estrogen(s) utilized in the present formulations will be selected according to conventional methods. It is most preferred that the dosage will be monitored to achieve the desired result with the minimum of estrogen(s) necessary.

Effective administration of these compounds of Formulas (I) and (II) may be given at a dose of from about 0.01 mg/day to about 1,000 mg/day. Preferably, administration will be from about 1 mg/day to about 600 mg/day in a single dose or in two or more divided doses. Most preferably a daily dose of between about 1 mg/day and about 150 mg/day will be administered. Such doses may be administered in any manner useful in directing the active compounds herein to the recipient, including orally, parenterally (including intravenous, intraperitoneal and subcutaneous injections, implants, etc.), intravaginally and transdermally. For the purposes of this disclosure, transdermal administrations are understood to include all administrations across the surface of the body and the inner linings of bodily passages including epithelial and mucosal tissues. Such administrations may be carried out using the present compounds, or pharmaceutically acceptable salts thereof, in lotions, creams, foams, patches, suspensions, solutions, and suppositories (rectal and vaginal).

Oral formulations containing the active compounds of Formulas (I) and (II) may comprise any conventionally used oral forms, including tablets, capsules, buccal forms, troches, lozenges and oral liquids, suspensions or solutions. Capsules may contain mixtures of the active compound(s) with inert fillers and/or diluents such as the pharmaceutically acceptable starches (e.g. corn, potato or tapioca starch), sugars, artificial sweetening agents, powdered celluloses, such as crystalline and microcrystalline celluloses, flours, gelatins, gums, etc. Useful tablet formulations may be made by conventional compression, wet granulation or dry granulation methods and utilize pharmaceutically acceptable diluents, binding agents, lubricants, disintegrants, suspending or stabilizing agents, including, but not limited to, magnesium stearate, stearic acid, talc, sodium lauryl sulfate, microcrystalline cellulose, carboxymethylcellulose calcium, polyvinylpyrrolidone, gelatin, alginic acid, acacia gum, xanthan gum, sodium citrate, complex silicates, calcium carbonate, glycine, dextrin, sucrose, sorbitol, dicalcium phosphate, calcium sulfate, lactose, kaolin, mannitol, sodium chloride, talc, dry starches and powdered sugar. Oral formulations herein may utilize standard delay or time release formulations to alter the absorption of the active compound(s). Suppository formulations may be made from traditional materials, including cocoa butter, with or without the addition of waxes to alter the suppository's melting point, and glycerin. Water soluble suppository bases, such as polyethylene glycols of various molecular weights, may also be used.

It will be understood that the estrogen of this invention will be administered in the dosages of conventional regimens, according to the recipient's tolerance and the particular treatment or maintenance schedule intended. The compounds of Formulas (I) and (II) herein will be administered in an amount necessary to agonize or antagonize the estrogen(s) of the formulation's activity to the level desired. When conjugated estrogens, USP, are used, it is preferred that the daily dosage is from 0.1 mg to 5.0 mg, more preferably between about 0.3 mg and about 2.5 mg, most preferably between about 0.3 and about 1.25 mg/day. For mestranol or ethynyl estradiol a daily dosage may be from about 1 μg to about 0.15 mg/day and a dosage of from about 1 μg to about 0.3 mg/day may be used for ethynyl estradiol, preferably between about 2 μg to about 0.15 mg/day of ethynyl estradiol.

The compounds of this invention can be formulated neat or with a pharmaceutical carrier for administration, the proportion of which is determined by the solubility and chemical nature of the compound, chosen route of administration and standard pharmacological practice. The pharmaceutical carrier may be solid or liquid.

A solid carrier can include one or more substances which may also act as flavoring agents, lubricants, solubilizers, suspending agents, fillers, glidants, compression aids, binders or tablet-disintegrating agents; it can also be an encapsulating material. In powders, the carrier is a finely divided solid which is in admixture with the finely divided active ingredient. In tablets, the active ingredient is mixed with a carrier having the necessary compression properties in suitable proportions and compacted in the shape and size desired. The powders and tablets preferably contain up to 99% of the active ingredient. Suitable solid carriers include, for example, calcium phosphate, magnesium stearate, talc, sugars, lactose, dextrin, starch, gelatin, cellulose, methyl cellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidine, low melting waxes and ion exchange resins.

Liquid carriers are used in preparing solutions, suspensions, emulsions, syrups, elixirs and pressurized compositions. The active ingredient can be dissolved or suspended in a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both or pharmaceutically acceptable oils or fats. The liquid carrier can contain other suitable pharmaceutical additives such as solubilizers, emulsifiers, buffers, preservatives, sweeteners, flavoring agents, suspending agents, thickening agents, colors, viscosity regulators, stabilizers or osmo-regulators. Suitable examples of liquid carriers for oral and parenteral administration include water (partially containing additives as above, e.g. cellulose derivatives, preferably sodium carboxymethyl cellulose solution), alcohols (including monohydric alcohols and polyhydric alcohols, e.g. glycols) and their derivatives, lethicins, and oils (e.g. fractionated coconut oil and arachis oil). For parenteral administration, the carrier can also be an oily ester such as ethyl oleate and isopropyl myristate. Sterile liquid carriers are useful in sterile liquid form compositions for parenteral administration. The liquid carrier for pressurized compositions can be halogenated hydrocarbon or other pharmaceutically acceptable propellant.

Liquid pharmaceutical compositions which are sterile solutions or suspensions can be utilized by, for example, intramuscular, intraperitoneal or subcutaneous injection. Sterile solutions can also be administered intravenously. The compounds of this invention can also be administered orally either in liquid or solid composition form.

The compounds of this invention may be administered rectally or vaginally in the form of a conventional suppository, creams, gels, etc. For administration by intranasal or intrabronchial inhalation or insufflation, the compounds of this invention may be formulated into an aqueous or partially aqueous solution, which can then be utilized in the form of an aerosol. The compounds of this invention may also be administered transdermally through the use of a transdermal patch containing the active compound and a carrier that is inert to the active compound, is non toxic to the skin, and allows delivery of the agent for systemic absorption into the blood stream via the skin. The carrier may take any number of forms such as creams and ointments, pastes, gels, and occlusive devices. The creams and ointments may be viscous liquid or semisolid emulsions of either the oil-in-water or water-in-oil type. Pastes comprised of absorptive powders dispersed in petroleum or hydrophilic petroleum containing the active ingredient may also be suitable. A variety of occlusive devices may be used to release the active ingredient into the blood stream such as a semipermeable membrane covering a reservoir containing the active ingredient with or without a carrier, or a matrix containing the active ingredient. Other occlusive devices are known in the literature.

The dosage requirements vary with the particular compositions employed, the route of administration, the severity of the symptoms presented and the particular subject being treated. Treatment will generally be initiated with small dosages less than the optimum dose of the compound. Thereafter the dosage is increased until the optimum effect under the circumstances is reached; precise dosages for oral, parenteral, transdermal, rectal or vaginal suppositories, nasal, or intrabronchial and other administrations will be determined by the administering physician based on experience with the individual subject treated. Preferably, the pharmaceutical composition is in unit dosage form, e.g. as tablets or capsules. In such form, the composition is sub-divided in unit dose containing appropriate quantities of the active ingredient; the unit dosage forms can be packaged compositions, for example, packeted powders, vials, ampoules, prefilled syringes or sachets containing liquids. The unit dosage form can be, for example, a capsule or tablet itself, or it can be the appropriate number of any such compositions in package form.

The compound(s) of Formulas (I) and (II) and the estrogen(s) of the present formulations may be administered in separate dosage units, such as separate pills, tablets, powders, etc., or combined into one formulation. When optimum dosages for the compounds of Formulas (I) and (II) and the estrogens of these formulations have been determined, it may preferable to incorporate both into a single formulation for ease of administration. It is also understood that the formulations herein may or may not include other pharmaceutically active components.

Solvents used for the reactions described herein were anhydrous Aldrich Sure Seal™ without further purification. Reagents were typically Aldrich and used without further purification. All reactions were carried out under a nitrogen atmosphere. Chromatography was performed using 230-400 mesh silica gel (Merck Grade 60, Aldrich Chemical Company). Thin layer chromatography was performed with Silica Gel 60F₂₅₄ plates from EM Science. ¹H NMR spectra were obtained on a Bruker AM-400 instrument in DMSO and chemical shifts reported in ppm. Melting points were determined on a Thomas-Hoover apparatus and are uncorrected. IR spectra were recorded on a Perkin-Elmer diffraction grating or Perkin-Elmer 784 spectrophotometers. Mass spectra were recorded on a Kratos MS 50 or Finnigan 8230 mass spectrometers. Elemental analyses were obtained with a Perkin-Elmer 2400 elemental analyzer. Analysis values for compounds with CHN analysis reported were within 0.4% of theoretical values.

Synthesis of α-Bromo Ketones Method a

The synthesis of the alpha bromo ketones is conveniently accomplished by simply dissolving the starting phenyl ketone in ethyl ether (0.05-0.10 M) and at room temperature, 1.1 equivalents of bromine is added in dropwise. The reaction can be monitored by TLC for consumption of starting materials. The reaction is worked up by washing with an aqueous sodium bicarbonate solution followed by a 10% aqueous sodium sulfite solution. The ether layer is washed with brine and dried over magnesium sulfate. Concentration of the reaction mixture typically yields the bromoketones in good yield and purity. The bromoketones were taken “as is” (without purification or characterization) to the next step.

3-Methyl Indoles

TABLE 1 Example No. X Q No. 1 H H No. 1a F OBn No. 2 H 4′-Obn No. 6 OBn 4′-OEt No. 7 OBn 4′-OBn No. 8 OBn 4′-F No. 9 OBn 3′-OMe, 4′-OBn No. 10 OBn 3′,4′-OCH₂O— No. 11 OBn 4′-O—iPr No. 12 OBn 4′-O—Cp No. 13 OBn 4′-CF₃ No. 14 OBn 4′-CH₃ No. 15 OBn 4′-Cl No. 16 OBn 2′-OMe, 4′-OMe No. 17 OBn 3′-OBn No. 18 OBn 4′-OBn, 3′-F No. 19 OBn 3′-OMe No. 20 OBn 4′-OCF₃

Method 1 Illustrated for Example No. 7 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1H-indole

A flask was charged with 4-benzyloxyaniline hydrochloride CAS No. [51145-58-5]. (45 g, 0.23 mol), 4′-benzyloxy-2-bromophenylpropiophenone CAS No. [66414-19-5](21 g, 0.066 mol), and 50 mL DMF. The reaction was heated at reflux for 30 minutes and then cooled to rt and then partitioned between 250 mL EtOAc and 100 mL 1N HCl (aq). The EtOAc was washed with NaHCO₃ (aq) and brine, then dried over MgSO₄. The solution was concentrated and the residue taken up in CH₂Cl₂ and hexanes added to precipitate out 25 g of a crude solid. The solid was dissolved in CH₂Cl₂ and evaporated onto silica gel and chromatographed using CH₂Cl₂/Hexane (1:5) to yield 9.2 g of a tan solid (33%): Mp=150-152° C.; ¹H NMR (DMSO) 10.88 (s, 1H), 7.56 (d, 2H, J=8.8 Hz), 7.48 (d, 4H, J=7.9 Hz), 7.42-7.29 (m, 6H), 7.21 (d, 1H, J=7.0 Hz), 7.13 (d, 2H, J=8.8 Hz), 7.08 (d, 1H, J=2.2 Hz), 6.94 (dd, 1H, J=8.8, 2.4 Hz), 5.16 (s, 2H), 5.11 (s, 2H), 2.33 (s, 3H); IR (KBr) 3470, 2880, 2820, 1620 cm⁻¹; MS eI m/z 419.

Method 2 Shown in Scheme 8 Also Illustrated for Example No. 7

Reagents used were same as in method 1 except the additional use of triethylamine in this method. The bromoketone CAS No. [66414-19-5](50.0 g, 0.16 mol) in 200 mL DMF was treated with the aniline hydrochloride CAS No. [51145-58-5](44 g, 0.22 mol) and the reaction purged with nitrogen for about 10 minutes. The triethylamine (54.6 mL) was added and the reaction was heated at 120° C. for 2 hours. TLC analysis (EtOAc/hexanes) shows the starting material has disappeared forming a more polar spot. The reaction mixture is allowed to cool down and an additional 48 g of the aniline hydrochloride was added. The reaction was heated to 150° C. for 2 hours. An additional 5 grams of the aniline hydrochloride was added and the reaction was heated at 150° C. for an additional 30 minutes. The reaction mixture is allowed to cool to room temperature and then poured into approximately 1.5 liters of water and extracted with 2 liters of ethyl acetate. Solids are dissolved with additional ethyl acetate as necessary. The ethyl acetate layer is washed with 1 liter of 1 N NaOH solution aq., 1 liter of water, brine, then dried over magnesium sulfate and filtered. The organic layers were concentrated down to yield a crude solid which is stirred with 500 mL of methanol and filtered. This solid is then stirred with 500 mL of ethyl ether and filtered. The solid is stirred alternatively with methanol and ether until it is of whitish color and has a melting point similar to that described for No. 7 in method 1. Reaction yields 36 grams of product.

Physical Data for Indoles

The following 3-methyl indoles (No. 1-No. 20) were synthesized according to the procedure outlined in scheme 2 using method 2 using the appropriately substituted bromoketones (prepared as given above) and anilines (commercially available; Aldrich) as starting materials.

Example No. 1 2-Phenyl-3-methyl-1H-indole

Mp=90-94° C.; ¹H NMR (DMSO) 11.13 (s, 1H), 7.68-7.64 (m, 2H), 7.54-7.46 (m, 3H), 7.37-7.32 (m, 2H), 7.12-7.06 (m, 1H), 7.03-6.97 (m, 1H), 2.40 (s, 3H); MS eI m/z 207 (M+).

Example No. 1a 5-Fluoro-2-(4-benzyloxy-phenyl)-3-methyl-1H-indole

Mp=143-146° C.

Example No. 2 2-(4-Benzyloxy-phenyl)-3-methyl-1H-indole

Mp=118-120° C.; ¹H NMR (DMSO) 11.03 (s, 1H), 7.57 (dd, 2H, J=2.0 Hz, 6.6 Hz), 7.48-7.46 (m, 3H), 7.44-7.28 (m, 4H), 7.18-7.11 (m, 2H), 7.08-7.03 (m, 1H), 7.0-6.95 (m, 1H), 5.16 (s, 2H), 2.36 (s, 3H); MS eI m/z 313 (M+).

Example No. 3 5-Benzyloxy-2-phenyl-3-methyl-1H-indole

Mp=141-144° C.; ¹H NMR (DMSO) 10.98 (s, 1H), 7.65-7.61 (m, 2H), 7.51-7.44 (m, 4H), 7.42-7.28 (m, 4H), 7.23 (d, 1H, J=8.8 Hz), 7.10 (d, 1H, J=2.5 Hz), 6.80 (d, 1H, J=6.0 Hz), 5.10 (s, 2H), 2.36 (s, 3H); MS eI m/z 313 (M+).

Example No. 4 5-Benzyloxy-2-(4-methoxy-phenyl)-3-methyl-1H-indole

Mp=158° C.; ¹H NMR 10.85 (brs, 1H), 7.56 (d, 2H, J=8.8 Hz), 7.48 (d, 2H, J=8.3 Hz), 7.45-7.36 (m, 2H), 7.34-7.28 (m, 1H), 7.21 (d, 1H, J=8.6 Hz), 7.09-7.04 (m, 3H), 6.79 (dd, 1H, J=8.8 Hz), 5.11 (s, 2H), 3.80 (s, 3H), 2.33 (s, 3H); IR (KBr) 3400, 2900, 1610 cm⁻¹; MS eI m/z 343 (M+); CHN calcd for C₂₃H₂₁NO₂+0.25H₂O.

Example No. 5 5-methoxy-2-(4-methoxy-phenyl)-3-methyl-1H-indole

Mp=139-142° C.; ¹H NMR (DMSO) 10.85 (s, 1H), 7.57 (d, 2H, J=8.8 Hz), 7.19 (d, 1H, J=8.6 Hz), 7.04 (d, 2H, J=6.8 Hz), 6.95 (d, 1H, J=2.2 Hz), 6.71 (dd, 1H, J=8.5 Hz, J=2.4 Hz), 3.80 (s, 3H), 3.76 (s, 3H), 2.33 (s, 3H); MS eI m/z 267 (M+); CHN calc for C₁₇H₁₇NO₂.

Example No. 6 5-Benzyloxy-2-(4-ethoxy-phenyl)-3-methyl-1H-indole

Mp=143-145° C.; ¹H NMR (DMSO) 10.86 (s, 1H), 7.54 (d, 2H, J=8.5 Hz), 7.46 (d, 2H, J=7.3 Hz), 7.41-7.37 (m, 2H), 7.32-7.30 (m, 1H), 7.20 (d, 1H, J=8.6 Hz), 7.05 (d, 1H), 7.03 (d, 2H, J=8.8 Hz), 6.79 (dd, 1H, J=8.6 Hz, J=2.4 Hz), 5.10 (s, 2H), 4.07 (q, 2H, J=6.8 Hz), 2.32 (s, 3H), 1.34 (t, 3H, J=7.0 Hz); MS eI m/z 357 (M+).

Example No. 8 5-Benzyloxy-2-(4-fluoro-phenyl)-3-methyl)-1H-indole

Mp=132° C.; ¹H NMR (DMSO) 11.0 (s, 1H), 7.68-7.64 (m, 2H), 7.49-7.47 (m, 2H), 7.41-7.31 (m, 5H), 7.23 (d, 1H, J=8.8 Hz), 7.10 (d, 1H, J=2.4 Hz), 6.82 (dd, 1H, J=8.8, 2.4 Hz), 5.11 (s, 2H), 2.34 (s, 3H); MS EI m/z 331; CHN calcd for C₂₂H₁₈FNO.

Example No. 9 5-Benzyloxy-2-(4-benzyloxy-3-methoxy-phenyl)-3-methyl-1H-indole

Mp=155-158° C.; ¹H NMR (DMSO) 10.88 (s, 1H), 7.50-7.45 (m, 4H), 7.41-7.35 (m, 6H), 7.22-7.20 (m, 2H), 7.14 (s, 2H), 7.08 (d, 1H, J=2.2 Hz), 6.78 (dd, 1H, J=8.5 Hz, J=2.4 Hz), 5.13 (s, 2H), 5.11 (s, 2H), 3.85 (s, 3H), 2.35 (s, 3H); MS eI m/z 449 (M+).

Example No. 10 2-Benzo[1,3]dioxol-5-yl-5-benzyloxy-3-methyl-1H-indole

Mp=142-145° C.; ¹H NMR (DMSO) 10.86 (s, 1H), 7.48 (d, 2H, J=7.0 Hz), 7.40-7.30 (m, 3H), 7.20 (m, 2H), 7.10-7.05 (m, 3H), 6.78 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 6.06 (s, 2H), 5.10 (s, 2H), 2.31 (s, 3H); MS eI m/z 357 (M+); CHN calc for C₂₃H₁₉NO₃.

Example No. 11 5-Benzyloxy-2-(4-isopropoxy-phenyl)-3-methyl)-1H-indole

Mp=136-138° C.; ¹H NMR (DMSO) 10.86 (s, 1H), 7.55-7.51 (m, 2H), 7.50-7.47 (d, 2H, J=7.3 Hz), 7.40-7.34 (m, 2H), 7.39-7.28 (m, 1H), 7.20 (d, 1H, J=8.7 Hz), 7.06 (d, 1H, J=2.2 Hz), 7.02 (d, 2H, J=8.8 Hz), 6.77 (dd, 1H, J=2.4 Hz, 8.8 Hz), 5.10 (s, 2H), 4.68-4.62 (m, 1H), 2.32 (s, 3H), 1.28 (d, 6H, J=6.0 Hz); MS eI m/z 371 (M+).

Example No. 12 5-Benzyloxy-2-(4-cyclopenyloxy-phenyl)-3-methyl-1H-indole

Mp=161-167° C.; ¹H NMR (DMSO) 10.85 (s, 1H), 7.53 (d, 2H, J=8.8 Hz), 7.47 (d, 2H, J=8.4 Hz), 7.40-7.36 (m, 2H), 7.33-7.28 (m, 1H), 7.20 (d, 1H, J=8.6 Hz), 7.07 (d, 1H, J=2.4 Hz), 7.01 (d, 2H, J=8.8 Hz), 6.78 (dd, 1H, J=8.6 Hz, 2.2 Hz), 5.10 (s, 2H), 4.88-4.84 (m, 1H), 2.32 (s, 3H), 1.99-1.88 (m, 2H), 1.78-1.69 (m, 4H), 1.64-1.52 (m, 2H); IR (KBr) 3400, 2920, 1600 cm⁻¹; MS eI m/z 397 (M+); CHN calcd for C₂₇H₂₇NO₂+0.25H₂O.

Example No. 13 5-Benzyloxy-2-(4-trifluoromethyl-phenyl)-3-methyl-1H-indole

¹H NMR (DMSO) 11.0 (br s, 1H), 7.87-7.82 (m, 4H), 7.48 (d, 2H, J=8.8 Hz), 7.44-7.35 (m, 2H), 7.34-7.26 (m, 2H), 7.15 (d, 1H, J=2.2 Hz), 6.87 (dd, 1H, J=8.6 Hz, 2.4 Hz), 5.12 (s, 2H), 2.41 (s, 3H); CHN calcd for C₂₃H₁₈F₃NO.

Example No. 14 5-Benzyloxy-2-(4-methyl-phenyl)-3-methyl-1H-indole

Mp=144-146° C.; ¹H NMR (DMSO) 10.91 (s, 1H), 7.56-7.20 (m, 10H), 7.08 (d, 1H, J=2.4 Hz), 6.80 (dd, 1H, J=2.4 Hz, 8.6 Hz), 5.11 (s, 2H), 2.34 (s, 3H), 2.34 (s, 3H); MS eI m/z 327 (M+).

Example No. 15 5-Benzyloxy-2-(4-chloro-phenyl)-3-methyl-1H-indole

Mp=134-136° C.; ¹H NMR (DMSO) 11.04 (s, 1H), 7.65 (d, 2H, J=8.3 Hz), 7.53 (d, 2H, J=8.5 Hz), 7.47 (d, 2H, J=6.8 Hz), 7.41-7.37 (m, 2H), 7.31-7.28 (m, 1H), 7.25 (d, 1H, J=8.5 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.82 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 5.11 (s, 2H), 2.35 (s, 3H); IR (KBr) 3380, 1210 cm⁻¹, Ms eI m/z 347 (M+); CHN calc for C₂₂H₁₈ClNO₂.

Example No. 16 5-Benzyloxy-2-(2,4-dimethoxy-phenyl)-3-methyl-1H-indole

Oil; ¹H NMR (DMSO) 10.58 (s, 1H), 7.50-7.18 (m, 7H), 7.04 (d, 1H, J=2.4 Hz), 6.76 (dd, 1H, J=2.3 Hz, 8.6 Hz), 6.69-6.62 (m, 2H), 5.11 (s, 2H), 3.82 (s, 3H), 3.78 (s, 3H), 2.12 (s, 3H).

Example No. 17 5-Benzyloxy-2-(3-benzyloxy-phenyl)-3-methyl-1H-indole

Mp=83-86° C.

Example No. 18 5-Benzyloxy-2-(4-benzyloxy-3-fluoro-phenyl)-3-methyl-1H-indole

Mp=135-137° C.; ¹H NMR (DMSO) 10.94 (s, 1H), 7.50-7.31 (m, 13H), 7.22 (d, 1H, J=8.6 Hz), 7.10 (d, 1H, J=2.2 Hz), 6.81 (dd, 1H, J=8.6 Hz, 2.2 Hz), 5.23 (s, 2H), 5.11 (s, 2H), 2.34 (s, 3H); MS eI m/Z 437 (M+); CHN calcd for C₂₉H₂₄FNO₂.

Example No. 19 5-Benzyloxy-2-(3-methoxy-phenyl)-3-methyl-1H-indole

Mp=107-109° C.; ¹H NMR (DMSO) 11.00 (s, 1H), 7.51-7.48 (m, 2H), 7.43-7.20 (m, 7H), 7.13-7.12 (d, 1H, J=2.1 Hz), 6.93-6.90 (dd, 1H, J=2.3 Hz, J=5.7 Hz), 6.86-6.82 (dd, 1H, J=2.3 Hz, J=6.3 Hz), 5.12 (s, 2H), 3.83 (s, 3H), 2.38 (s, 3H); IR (KBr) 3400, 2900, 1600 cm⁻¹; MS eI m/z 343 (M+); CHN calcd for C₂₃H₂₁NO₂.

Example No. 20 5-Benzyloxy-3-methyl-2-(4-trifluoromethoxy-phenyl)-1H-indole

Mp=127-128° C.; ¹H NMR (DMSO) 11.07 (s, 1H), 7.77-7.74 (dd, 2H, J=1.8 Hz, J=5.0 Hz), 7.50-7.48 (d, 4H, J=8.3 Hz), 7.42-7.25 (m, 4H), 7.14-7.13 (d, 1H, J=2.2 Hz), 6.87-6.83 (dd, 1H, J=2.3 Hz, J=6.3 Hz), 5.13 (s, 2H), 2.37 (s, 3H); IR (KBr) 3360, 1600 cm⁻¹; MS eI m/z 396 (M+); CHN calcd for C₂₃H₁₈F₃NO₂.

3-Methylindole Acetic Acid Ethyl Esters

TABLE 2 Example No. X Q No. 21 H H No. 22 OBn H No. 23 OBn 4′-OMe No. 24 OMe 4′-OMe No. 25 OBn 4′-OEt No. 26 OBn 4′-OBn No. 27 OBn 4′-F No. 28 OBn 3′-OMe, 4′-OBn No. 29 OBn 4′-O—iPr No. 30 OBn 3′,4′-OCH₂O— No. 31 OBn 4′-OCp No. 32 OBn 4′-CF₃ No. 33 OBn 4′-Cl No. 34 OBn 2′-OMe, 4′-OMe

Experimental Procedure for 3-Methylindole Acetic Acid Ethyl Esters Synthesis Method 3 Illustrated for Example No. 26 {4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

A solution of 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1H-indole (indole example No. 7) (32 g, 77 mmol) in DMF (0.15 L) was cooled to 0° C. and treated with sodium hydride (2.2 g, 89 mmol). The reaction was stirred for 20 minutes and then the benzyl chloride CAS No. [80494-75-3](29 g, 127 mmol) was added and the reaction stirred for 18 hours at room temperature. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate was washed with brine and dried over magnesium sulfate. The ethyl acetate was concentrated and triturated with ether to obtain 21 g of a white solid. The filtrate was concentrated and triturated with ether to give an additional 7 g of white solid for a total yield of 28 g: Mp=129-131° C.; ¹H NMR (DMSO) 7.47 (d, 4H, J=7.2 Hz), 7.39 (q, 4H, J=7.9 Hz), 7.36-7.32 (m, 1H), 7.29 (d, 2H, J=8.8 Hz), 7.19 (d, 1H, J=9.0 Hz), 7.13-7.09 (m, 4H), 6.80 (dd, 1H, J=8.8, 2.4 Hz), 6.73 (s, 4H), 5.16 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 4.66 (s, 2H), 4.11 (q, 2H, J=7.2 Hz), 2.15 (s, 3H), 1.16 (t, 3H, J=7.2 Hz); MS eI m/z 612.

Physical Data for Indole Ethyl Esters

The following indole alkylation products were prepared according to scheme 9 using method 3 with the appropriately substituted 3-methyl indole selected from (No. 1-No. 16) as the starting material.

Example No. 21 {4-[2-Phenyl-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Oil; ¹H NMR (DMSO) 7.57-7.30 (m, 7H), 7.13-7.02 (m, 2H), 6.77-6.70 (m, 4H), 5.22 (s, 2H), 4.65 (s, 2H), 4.09 (q, 2H, J=7.2 Hz), 2.20 (s, 3H), 1.15 (t, 3H, J=7.0 Hz); MS eI m/z 399 (M+).

Example No. 22 {4-[5-Benzyloxy-2-phenyl-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Oil; ¹H NMR (DMSO) 7.50-7.40 (m, 10H), 7.22 (d, 1H, J=8.4 Hz), 7.14 (d, 1H, J=2.5 Hz), 6.83 (d, 1H, J=2.5 Hz), 6.72 (s, 4H), 5.18 (s, 2H), 5.11 (s, 2H), 4.65 (s, 2H), 4.10 (q, 2H, J=7.2 Hz), 2.16 (s, 3H), 1.14 (t, 3H, J=7.0 Hz); MS eI m/z 505 (M+).

Example No. 23 {4-[5-Benzyloxy-2-(4-methoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=90-96° C.; ¹H NMR (DMSO) 7.47 (d, 2H, J=6.8 Hz), 7.41-7.37 (m, 2H), 7.33-7.27 (m, 3H), 7.19 (d, 1H, J=8.8 Hz), 7.12 (d, 1H, J=2.4 Hz), 7.03 (d, 2H, J=8.8 Hz), 6.80 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.74 (s, 4H), 5.16 (s, 2H), 5.11 (s, 2H), 4.65 (s, 2H), 4.11 (q, 2H, J=7.0 Hz), 3.79 (s, 3H), 2.15 (s, 3H), 1.16 (t, 3H, J=7.0 Hz); IR (KBr) 2990, 2900, 1760, 1610 cm⁻¹; MS FAB m/z 536 (M+H+).

Example No. 24 {4-[5-Methoxy-2-(4-methoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=109-113° C.; ¹H NMR (DMSO) 7.27 (d, 2H, J=8.8 Hz), 7.17 (d, 1H, J=8.8 Hz), 7.03 (d, 2H J=8.6 Hz), 6.99 (d, 1H, J=2.5 Hz), 6.78-6.70 (m, 5H), 5.15 (s, 2H), 4.65 (s, 2H), 4.11 (q, 2H, J=7.0 Hz), 3.78 (s, 3H), 3.76 (s, 3H), 2.15 (s, 3H), 1.15 (t, 3H, J=7.1 Hz); MS eI m/z 459 (M+).

Example No. 25 {4-[5-Benzyloxy-2-(4-ethoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=113-115° C.; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.3 Hz), 7.40-7.25 (m, 5H), 7.17 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.01 (d, 2H, J=6.8 Hz), 6.78 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.65 (s, 2H), 4.15-4.01 (m, 4H), 2.14 (s, 3H), 1.33 (t, 3H, J=5.7 Hz), 1.16 (t, 3H, J=7.1 Hz); MS eI m/z 549 (M+).

Example No. 27 {4-[5-Benzyloxy-2-(4-fluoro-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

¹H NMR (DMSO) 7.50-7.15 (m, 16H), 5.20 (s, 2H), 5.12 (s, 2H), 4.62 (s, 2H), 4.13 (q, 2H, J=7.1 Hz), 2.18 (s, 3H), 1.20 (t, 3H, J=7.1 Hz).

Example No. 28 {4-[5-Benzyloxy-2-(3-methoxy-4-benzyloxy)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Foam; ¹H NMR (DMSO) 7.50-7.30 (m, 10H), 7.22 (d, 2H, J=9.1 Hz), 7.13 (d, 2H, J=8.6 Hz), 6.85-6.70 (m, 6H), 5.17 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 4.66 (s, 2H), 4.14 (m, 2H), 3.61 (s, 3H), 2.17 (s, 3H), 1.16 (t, 3H, J=7.0 Hz).

Example No. 29 {4-[5-Benzyloxy-2-(4-isopropoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Oil; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.7 Hz), 7.42-7.28 (m, 3H), 7.25 (d, 2H, J=8.7 Hz), 7.17 (d, 1H, J=8.7 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.99 (d, 2H, J=8.6 Hz), 6.79 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.70-4.60 (m, 3H), 4.10 (q, 2H, J=7.0 Hz), 2.15 (s, 3H), 1.27 (d, 6H, J=5.9 Hz), 1.16 (t, 3H, J=7.1 Hz); MS eI m/z 563 (M+).

Example No. 30 {4-[5-Benzyloxy-2-(3,4-methlyenedioxy-benzyloxy)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Oil; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.0 Hz), 7.37 (m, 2H), 7.32 (m, 1H), 7.19 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.00 (d, 1H, J=7.9 Hz), 6.90 (d, 1H, 5.0 Hz), 6.82-6.75 (m, 6H), 6.07 (s, 2H), 5.16 (s, 2H), 5.10 (s, 2H), 4.65 (s, 2H), 4.10 (m, 2H), 2.15 (s, 3H), 1.15 (t, 3H, J=7.0 Hz); MS eI m/z 549 (M+).

Example No. 31 {4-[5-Benzyloxy-2-(4-cyclopentyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=96-98° C.; ¹H NMR (DMSO) 7.47 (d, 1H, J=7.2 Hz), 7.40-7.36 (m, 2H), 7.33-7.30 (m, 1H), 7.26 (m, 2H), 7.18 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.98 (d, 2H, J=8.8 Hz), 6.79 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.74 (s, 5H), 5.15 (s, 2H), 5.11 (s, 2H), 4.86-4.80 (m, 1H), 4.66 (s, 2H), 4.13 (q, 2H, J=7.2 Hz), 2.15 (s, 3H), 1.98-1.85 (m, 2H), 1.79-1.65 (m, 4H), 1.62-1.55 (m, 2H), 1.16 (t, 3H, J=7.0 Hz); IR (KBr) 2950, 2910, 2890, 1760, 1610 cm⁻¹; MS eI m/z 589 (M+); CHN calcd for C, 77.39; H, 6.67; N, 2.38. Found: C, 76.76; H, 6.63; N, 2.27.

Example No. 32 {4-[5-Benzyloxy-3-methyl-2-(4-trifluoromethyl-phenyl)-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=221° C.; ¹H NMR (DMSO) 7.83 (d, 2H, J=8.1 Hz), 7.60 (d, 2H, J=7.9 Hz), 7.48 (d, 2H, J=8.4 Hz), 7.40-7.36 (m, 4H), 7.18 (d, 1H, J=2.4 Hz), 6.86 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.72 (s, 4H), 5.21 (s, 2H), 5.12 (s, 2H), 4.65 (s, 2H), 4.11 (q, 2H, J=7.2 Hz), 2.20 (s, 3H), 1.16 (t, 3H, J=7.0 Hz); IR (KBr) 2920, 1730 cm⁻¹; MS eI m/z 573 (M+); CHN calcd for C₃₄H₃₀F₃NO₄+0.25H₂O.

Example No. 33 {4-[5-Benzyloxy-2-(4-chlorophenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=99-101° C.; ¹H NMR (DMSO) 7.52 (d, 2H, J=8.6 Hz), 7.46 (d, 2H, J=6.8 Hz), 7.42-7.38 (m, 4H), 7.36 (m, 1H), 7.25 (d, 1H, J=9.0 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=8.8 Hz, J=2.5 Hz), 6.72 (s, 4H), 5.18 (s, 2H), 5.11 (s, 2H), 4.65 (s, 2H), 4.11 (q, 2H, J=7.2 Hz), 2.16 (s, 3H), 1.15 (t, 3H, J=7.2 Hz); MS eI m/z 539 (M+); CHN calc for C₃₃H₃₀ClNO₄.

Example No. 34 {4-[5-Benzyloxy-2-(2,4-dimethoxy)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Oil; ¹H NMR (DMSO) 7.30-6.45 (m, 15H), 4.95 (s, 2H), 4.75-4.65 (m, 2H), 4.50 (s, 2H), 3.97 (q, 2H, J=7.1 Hz), 3.65 (s, 3H), 3.51 (s, 3H), 1.87 (3H), 1.01 (t, 3H, J=7.1 Hz).

3-Methylindole Phenylethanols

TABLE 3 Example No. X Q No. 35 H H No. 36 OMe 4′-OMe No. 37 OBn 4′-OEt No. 38 OBn 4′-OBn No. 39 OBn 4′-F No. 40 OBn 3′,4′-OCH₂O— No. 41 OBn 4′-O—iPr No. 42 OBn 4′-OCp No. 43 OBn 4′-CF₃ No. 44 OBn 4′-CH₃ No. 45 OBn 4′-Cl No. 46 OBn 2′-OMe, 4′-OMe

Experimental Procedure for 3-Methylindole Phenethanols Synthesis Method 4 Illustrated for Example No. 38 2-{4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

A solution of No. 26 from previous step (5.5 g, 8.8 mmol) in THF (50 mL) was cooled to 0° C. and a solution of LiAlH₄ (10 mL, 1 M) in THF was added dropwise. After 30 minutes at 0° C. the reaction was carefully quenched with water, and partitioned between EtOAc and 1 N HCl. The EtOAc was dried with MgSO₄, concentrated, and chromatographed on silica gel EtOAc/hexane (2:3) to yield 4.0 g of No. 38 as a white foam: ¹H NMR (DMSO) 7.48-7.46 (m, 4H), 7.42-7.27 (m, 8H), 7.20 (d, 1H, J=8.8 Hz), 7.12-7.10 (m, 3H), 6.80 (dd, 1H, J=8.8, 2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 4.80 (t, 1H, J=5.5 Hz), 3.86 (t, 2H, J=4.8 Hz), 3.63 (q, 2H, J=5.3 Hz), 2.15 (s, 3H).

Physical Data For Indole Phenethanols

Following compounds were made according to scheme 10 and method 4 using the appropriately substituted indole ethyl ester selected from No. 21-No. 34.

Example No. 35 2-{4-[2-phenyl-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Oil; ¹H NMR (DMSO) 7.57-7.32 (m, 7H), 7.13-7.02 (m, 2H), 6.74 (s, 4H), 5.21 (s, 2H), 4.80 (s, 1H), 3.86-3.83 (m, 2H), 3.62 (s, 2H), 2.20 (s, 3H); MS eI m/z 357 (M+).

Example No. 36 2-{4-[5-methoxy-2-(4-methoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Oil; ¹H NMR (DMSO) 7.27 (d, 2H, J=8.8 Hz), 7.17 (d, 1H, J=8.8 Hz), 7.03 (d, 2H J=8.6 Hz), 6.99 (d, 1H, J=2.5 Hz), 6.78-6.70 (m, 5H), 5.14 (s, 2H), 4.80 (brs, 1H), 3.85 (t, 2H, J=5.0 Hz), 3.78 (s, 3H), 3.76 (s, 3H), 3.63 (t, 2H, J=5.0 Hz), 2.16 (s, 3H); MS eI m/z 417 (M+).

Example No. 37 2-{4-[5-benzyloxy-2-(4-ethoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Foam; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.3 Hz), 7.40-7.25 (m, 5H), 7.17 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.01 (d, 2H, J=6.8 Hz), 6.78 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.80 (brs, 1H), 4.06 (q, 2H, J=6.8 Hz), 3.85 (t, 2H, J=5.0 Hz), 3.63 (t, 2H, J=4.8 Hz), 2.14 (s, 3H), 1.33 (t, 3H, J=6.9 Hz); MS eI m/z 507 (M+).

Example No. 39 2-{4-[5-benzyloxy-2-(4-fluoro-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

¹H NMR (DMSO) 7.40-6.60 (m, 16H), 5.10 (s, 1H), 5.07 (s, 2H), 5.02 (s, 2H), 3.76 (t, 2H, J=4.9 Hz), 3.53 (t, 2H, J=5.0 Hz), 2.06 (s, 3H).

Example No. 40 2-{4-[5-benzyloxy-2-(3,4-methylenedioxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Oil; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.0 Hz), 7.37 (m, 2H), 7.32 (m, 1H), 7.19 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.00 (d, 1H, J=7.9 Hz), 6.90 (d, 1H, 5.0 Hz), 6.82-6.75 (m, 6H), 6.07 (s, 2H), 5.16 (s, 2H), 5.10 (s, 2H), 3.86 (t, 2H, J=5.0 Hz), 3.63 (t, 2H, J=5.0 Hz), 2.15 (s, 3H); MS eI m/z 507 (M+).

Example No. 41 2-{4-[5-Benzyloxy-2-(4-isopropoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Foam; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.7 Hz), 7.42-7.28 (m, 3H), 7.25 (d, 2H, J=8.7 Hz), 7.17 (d, 1H, J=8.7 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.99 (d, 2H, J=8.6 Hz), 6.79 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.73 (s, 4H), 5.14 (s, 2H), 5.10 (s, 2H), 4.80 (bs, 1H), 4.70-4.60 (m, 1H), 3.85 (t, 2H, J=4.8 Hz), 3.63 (t, 2H, J=5.1 Hz), 2.13 (s, 3H), 1.30 (d, 6H, J=5.9 Hz); MS eI m/z 521 (M+).

Example No. 42 2-{4-[5-Benzyloxy-2-(4-cyclopentyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Mp=129-131° C.; ¹H NMR (DMSO) 7.47 (d, 2H, J=7.2 Hz), 7.38 (t, 2H, J=7.2 Hz), 7.33-7.28 (m, 1H), 7.25 (d, 2H, J=8.8 Hz), 7.18 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.98 (d, 2H, J=8.8 Hz), 6.79 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.74 (s, 4H), 5.15 (s, 2H), 5.11 (s, 2H), 4.84-4.80 (m, 1H), 4.79 (t, 1H, J=5.7 Hz), 3.86 (t, 2H, J=4.8 Hz), 3.63 (q, 2H, J=5.1 Hz), 2.15 (s, 3H), 1.96-1.87 (m, 2H), 1.77-1.65 (m, 4H), 1.62-1.53 (m, 2H); IR (KBr) 3490 br, 2920, 1620 cm-1; MS eI m/Z 547 (M+).

Example No. 43 2-{4-[5-Benzyloxy-2-(4-trifluoromethyl-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Foam; ¹H NMR (DMSO) 7.83 (d, 2H, J=8.1 Hz), 7.59 (d, 2H, J=7.9 Hz), 7.47 (d, 2H, J=8.3 Hz), 7.42-7.36 (m, 2H), 7.35-7.29 (m, 2H), 7.18 (d, 1H, J=2.4 Hz), 6.87 (dd, 1H, J=8.1 Hz, 2.4 Hz), 6.77-6.68 (m, 4H), 5.21 (s, 2H), 5.12 (s, 2H), 4.81 (br s, 1H), 3.85 (t, 2H, J=5.1 Hz), 3.63 (t, 2H, J=5.1 Hz), 2.19 (s, 3H); MS eI m/z 531.

Example No. 44 2-{4-[5-Benzyloxy-2-(4-methyl-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Oil; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.2 Hz), 7.45-7.18 (m, 8H), 7.12 (d, 1H, J=2.4 Hz), 6.81 (dd, 1H, J=2.4 Hz, 8.6 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.80 (bs, 1H), 3.85 (t, 2H, J=4.8 Hz), 3.63 (t, 2H, J=4.9 Hz), 2.34 (s, 3H), 2.15 (s, 3H); MS eI m/z 477 (M+).

Example No. 45 2-{4-[5-Benzyloxy-2-(4-chloro-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Mp=110-113° C.; ¹H NMR (DMSO) 7.52 (d, 2H, J=8.6 Hz), 7.46 (d, 2H, J=6.8 Hz), 7.38 (m, 4H), 7.42-7.37 (m, 1H), 7.25 (d, 1H, J=9.0 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=8.8 Hz, J=2.5 Hz), 6.76-6.70 (m, 4H), 5.17 (s, 2H), 5.11 (s, 2H); 3.85 (t, 2H, J=5.2 Hz), 3.63 (t, 2H, J=5.0 Hz), 2.16 (s, 3H); MS eI m/z 497 (M+).

Example No. 46 2-{4-[5-Benzyloxy-2-(2,4-dimethoxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Oil; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.5 Hz), 7.39-7.35 (m, 2H), 7.31-7.28 (m, 1H), 7.16-7.06 (m, 3H), 6.82-6.72 (m, 5H), 6.68 (d, 1H, J=2.2 Hz), 6.61 (dd, 1H, J=2.4 Hz, 8.3 Hz), 5.0 (s, 1H), 4.88 (s, 2H), 4.85 (d, 1H, J=6.3 Hz), 4.69 (d, 1H, J=6.3 Hz), 3.63 (t, 2H, J=6.9 Hz), 3.58 (s, 3H), 3.46 (s, 3H), 3.40 (t, 2H, J=6.9 Hz), 1.80 (s, 3H).

Data for 3-methylindole phenylethyl bromides

TABLE 4 Example No. X Q No. 47 H H No. 48 OMe 4′-OMe No. 49 OBn 4′-OEt No. 50 OBn 4′-OBn No. 51 OBn 4′-F No. 52 OBn 3′,4′-OCH₂O— No. 52a OBn 3′-OMe, 4′-OBn No. 53 OBn 4′-O—iPr No. 54 OBn 4′-OCp No. 55 OBn 4′-CF₃ No. 56 OBn 4′-CH₃ No. 57 OBn 4′-Cl

Experimental Procedure for 3-Methylindole Phenethyl bromide Synthesis Method 5 Illustrated for Example No. 50 Example No. 50 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-1H-indole

To a solution of example No. 38 (3.3 g, 5.8 mmol) in THF (50 mL) was added CBr₄ (2.9 g, 8.7 mmol) and PPH₃ (2.3 g, 8.7 mmol). The reaction was stirred at rt for 3 h and then concentrated and chromatographed on silica gel using a gradient elution from EtOAc/hexane (1:4) to EtOAc to give 3.2 g of a white solid: Mp=131-134° C.; ¹H NMR (DMSO) 7.64-7.30 (m, 10H), 7.29 (d, 2H, J=8.8 Hz), 7.20 (d, 1H, J=8.8 Hz), 7.12-7.09 (m, 3H), 6.80 (dd, 1H, J=8.8, 2.4 Hz), 6.77-6.73 (m, 4H), 5.16 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 4.20 (t, 2H, J=5.3 Hz), 3.73 (t, 2H, J=5.5 Hz), 2.15 (s, 3H); MS FAB 631/633 (M+H⁺, Br present).

Physical Data for Indole Phenethyl Bromides

The following compounds were made according to scheme 11 as described in Method 5 using the appropriately substituted indole selected from No. 35-No. 45.

Example No. 47 1-[4-(2-bromo-ethoxy)-benzyl]-2-phenyl-3-methyl-1H-indole

Oil; ¹H NMR (DMSO) 7.57-7.32 (m, 7H), 7.13-7.02 (m, 2H), 6.74 (s, 4H), 5.21 (s, 2H), 4.19 (t, 2H, J=5.2 Hz), 3.71 (t, 2H, J=5.5 Hz), 2.20 (s, 3H); MS eI m/z 419 (M+).

Example No. 48 5-Methoxy-2-(4-methoxy-phenyl)-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-1H-indole

Oil; ¹H NMR (DMSO) 7.27 (d, 2H, J=8.8 Hz), 7.17 (d, 1H, J=8.8 Hz), 7.03 (d, 2H J=8.6 Hz), 6.99 (d, 1H, J=2.5 Hz), 6.80-6.69 (m, 5H), 5.14 (s, 2H), 4.19 (t, 2H, J=5.4 Hz), 3.78 (s, 3H), 3.76 (s, 3H), 3.72 (t, 2H, J=5.5 Hz), 2.16 (s, 3H); MS eI m/z 479 (M+).

Example No. 49 5-Benzyloxy-2-(4-ethoxy-phenyl)-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-1H-indole

Mp=118-120° C.; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.3 Hz), 7.41-7.26 (m, 5H), 7.17 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.01 (d, 2H, J=6.8 Hz), 6.78 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 6.78-6.74 (m, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.22-4.18 (m, 2H), 4.04 (q, 2H, J=6.8 Hz), 3.72 (t, 2H, J=5.5 Hz), 2.14 (s, 3H), 1.33 (t, 3H, J=7.0 Hz); MS eI m/z 569 (M+).

Example No. 51 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-2-(4-fluoro-phenyl)-3-methyl-1H-indole

Mp=114-116° C.; ¹H NMR (DMSO) 7.47 (m, 2H), 7.45-7.20 (m, 8H), 7.14 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=2.7 Hz, 9.0 Hz), 6.80-6.70 (m, 4H), 5.16 (s, 2H), 5.11 (s, 2H), 4.19 (t, 2H, J=5.27 Hz), 3.72 (t, 2H, J=6.4 Hz), 2.15 (s, 3H); MS eI m/z 543 (M+); CHN calc for C₃₁H₂₇BrFNO₂.

Example No. 52 2-Benzo[1,3]dioxyl-5-yl-5-benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-1H-indole

Mp=133-136° C.; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.0 Hz), 7.41-7.38 (m, 2H), 7.35-7.30 (m, 1H), 7.19 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.00 (d, 1H, J=7.9 Hz), 6.90 (d, 1H, 1.4 Hz), 6.82-6.78 (m, 2H), 6.77 (s, 4H), 6.07 (s, 2H), 5.16 (s, 2H), 5.10 (s, 2H), 4.20 (t, 2H, J=5.5 Hz), 3.73 (t, 2H, J=5.2 Hz), 2.15 (s, 3H); MS eI m/z 569 (M+).

Example No. 52a 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-2-(3-methoxy-4-benzyloxy-phenyl)-3-methyl-1H-indole

Foam; ¹H NMR (DMSO) 7.47-7.42 (m, 4H), 7.40-7.30 (m, 6H), 7.20 (d, 1H, J=8.8 Hz), 7.12-7.10 (m, 2H), 6.86-6.84 (m, 2H), 6.81 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.78 (s, 4H), 5.17 (s, 2H), 5.11 (s, 2H), 5.10 (s, 2H), 4.20 (t, 2H, J=5.0 Hz), 3.72 (t, 2H, J=5.4 Hz), 3.63 (s, 3H), 2.17 (s, 3H); MS FAB m/z 662 (M+H+).

Example No. 53 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-2-(4-isopropoxy-phenyl)-3-methyl-1H-indole

Mp=125-128° C.; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.7 Hz), 7.42-7.28 (m, 3H), 7.25 (d, 2H, J=8.7 Hz), 7.17 (d, 1H, J=8.7 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.99 (d, 2H, J=8.6 Hz), 6.79 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.73 (s, 4H), 5.14 (s, 2H), 5.10 (s, 2H), 4.70-4.60 (m, 1H), 4.19 (t, 2H, J=5.3 Hz), 3.72 (t, 2H, J=4.4 Hz), 2.13 (s, 3H), 1.30 (d, 6H, J=5.9 Hz); MS eI m/z 583 (M+).

Example No. 54 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-2-(4-cyclopentyloxy-phenyl)-3-methyl-1H-indole

Mp=110-112° C.; 7.47 (d, 2H, J=7.0 Hz), 7.38 (t, 2H, J=7.0 Hz), 7.35-7.28 (m, 1H), 7.25 (d, 2H, J=8.8 Hz), 7.18 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.98 (d, 2H, J=8.6 Hz), 6.79 (dd, 1H, J=8.6 Hz, 2.4 Hz), 6.78-6.74 (m, 4H), 5.16 (s, 2H), 5.11 (s, 2H), 4.86-4.83 (m, 1H), 4.20 (t, 2H, J=5.3 Hz), 3.73 (t, 2H, J=5.5 Hz), 2.15 (s, 3H), 2.00-1.87 (m, 2H), 1.79-1.65 (m, 4H), 1.63-1.56 (m, 2H); IR (KBr) 2950, 2910, 1610 cm⁻¹; MS eI m/z 609, 611 (M+, Br present).

Example No. 55 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-2-(4-trifluoromethyl-phenyl)-1H-indole

Mp=106-109° C.; ¹H NMR (DMSO) 7.83 (d, 2H, J=8.1 Hz), 7.60 (d, 2H, J=7.9 Hz), 7.35-7.29 (m, 2H), 7.48 (d, 2H, J=8.6 Hz), 7.39 (t, 2H, J=7.0 Hz), 7.18 (d, 1H, J=2.2 Hz), 6.87 (dd, 1H, J=9.0 Hz, 2.6 Hz), 6.77-6.71 (m, 4H), 5.22 (s, 2H), 5.12 (s, 2H), 4.20 (t, 2H, J=5.3 Hz), 3.72 (t, 2H, J=5.3 Hz), 2.20 (s, 3H); IR (KBr) 2910, 2850, 1620 cm⁻¹; MS eI m/z 595, 593 (M+)

Example No. 56 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-2-(4-methyl-phenyl)-1H-indole

Mp=82-95° C.; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.2 Hz), 7.45-7.18 (m, 8H), 7.12 (d, 1H, J=2.4 Hz), 6.81 (dd, 1H, J=2.4 Hz, 8.6 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.19 (t, 2H, J=5.3 Hz), 3.72 (t, 2H, J=4.4 Hz), 2.34 (s, 3H), 2.15 (s, 3H); MS eI m/z 539 (M+).

Example No. 57 5-Benzyloxy-1-[4-(2-bromo-ethoxy)-benzyl]-3-methyl-2-(4-chloro-phenyl)-1H-indole

¹H NMR (DMSO) 7.52 (d, 2H, J=8.6 Hz), 7.46 (d, 2H, J=6.8 Hz), 7.38 (m, 4H), 7.36 (m, 1H), 7.25 (d, 1H, J=9.0 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=8.8 Hz, J=2.5 Hz), 6.72 (m, 4H), 5.17 (s, 2H), 5.11 (s, 2H), 4.19 (t, 2H, J=5.5 Hz), 3.72 (t, 2H, J=5.5 Hz), 2.16 (s, 3H); MS eI m/z 559 (M+).

Data for Some 3-methylindole phenylethyl chlorides used as intermediates

TABLE 5 Example No. X Q No. 58 OBn 3′-OBn No. 59 OBn 3′-F, 4′-OBn No. 60 OBn 4′-OCF₃

Experimental Procedure for 3-Methylindole Phenethylchloride Synthesis Method 5a Illustrated for Example No. 58 5-Benzyloxy-2-(3-benzyloxy-phenyl)-1-[4-(2-chloro-ethoxy)-benzyl]-3-methyl-1H-indole

To a solution of 9.7 g (0.0231 mol) of 5-benzyloxy-3-methyl-2-(3-benzyloxy-phenyl)-1H-indole (indole example No. 17) in 80 mL of dry DMF was added 0.85 g of sodium hydride (60% in mineral oil). After allowing this mixture to stir for 30 minutes (until no more bubbling was indicated), 4.8 g of 1-chloromethyl-4-(2-chloro-ethoxy)-benzene CAS No. [99847-87-7] was added. The reaction mixture was allowed to react at room temperature overnight. 200 mL of ethyl acetate were added to the reaction mixture and then washed with water (3×100 mL). The organic solution was collected, washed with saturated brine, removed, dried over magnesium sulfate, filtered and evaporated to dryness in a rotary evaporator. The product was recrystallized in ethyl acetate.

Mp=125-127° C.; ¹H NMR (DMSO) 7.48-7.46 (d, 2H, J=6.8 Hz), 7.40-7.35 (m, 7H), 7.33-7.28 (m, 2H), 7.23-7.21 (d, 1H, J=8.8 Hz). 7.13-7.12 (d, 1H, J=2.2 Hz), 7.07-7.04 (m, 1H), 6.94-6.92 (d, 2H, J=6.1 Hz), 6.83-6.80 (dd, 1H, J=2.5 Hz, J=6.3 Hz), 6.78-6.72 (m, 4H), 5.14 (s, 2H), 5.11 (s, 2H), 5.04 (s, 2H), 4.13-4.10 (t, 2H, J=5.1 Hz), 3.86-3.84 (t, 2H, J=5.1 Hz), 2.14 (s, 3H); IR 3420, 2900 cm⁻¹; MS eI m/z 587 (M+); CHN calcd for C₃₈H₃₄ClNO₃.

Physical Data for Indole Phenethyl Chlorides

The following compounds were made according to scheme 12 as described in Method 5a using the appropriately substituted indoles No. 18, No. 20.

Example No. 59 5-Benzyloxy-2-(4-benzyloxy-3-fluoro-phenyl)-1-[4-(2-chloro-ethoxy)-benzyl]-3-methyl-1H-indole

Mp=88-91° C.; ¹H NMR (DMSO) 7.49-7.43 (m, 4H), 7.43-7.28 (m, 7H), 7.26-7.21 (m, 2H), 7.13-7.09 (m, 2H), 6.88-6.72 (m, 5H), 5.21 (s, 2H), 5.18 (s, 2H), 5.11 (s, 2H), 4.13 (t, 2H, J=5.2 Hz), 3.87 (t, 2H, J=5.2 Hz), 2.16 (s, 3H); MS eI m/Z 605 (M+); CHN calcd for C₃₈H₃₃ClFNO₃.

Example No. 60 5-Benzyloxy-1-[4-(2-chloro-ethoxy)-benzyl]-3-methyl-2-(4-trifluoromethoxy-phenyl)-1H-indole

Mp=108-110° C.; ¹H NMR (DMSO) 7.49-7.48 (m, 6H), 7.40-7.25 (m, 4H), 7.17-7.16 (d, 1H, J=2.9 Hz), 6.88-6.84 (m, 1H), 6.77-6.72 (m, 4H), 5.20 (s, 2H), 5.14-5.13 (d, 2H, J=2.3 Hz), 4.16-4.11 (m, 2H), 3.89-3.84 (m, 2H), 2.19-2.17 (m, 3H); IR 3400, 2900, 1600 cm⁻¹; MS eI m/z 566 (M+); CHN calcd for C₃₂H₂₇ ClF₃NO₃+0.25H₂O.

Aminoethoxy indoles

TABLE 6 Example No. X Q Z No. 61 OBn 4′-OEt

No. 62 OBn H

No. 63 OBn 4′-OBn

No. 64 OBn 4′-OBn

No. 65 OBn 4′-OBn

No. 66 OBn 4′-OBn

No. 66a OBn 4′-OBn

No. 67 OBn 4′-OBn

No. 68 OBn 4′-OBn

No. 69 OBn 4′-OBn

No. 70 OBn 4′-OBn

No. 71 OBn 4′-OBn

No. 71a OBn 4′-OBn

No. 72 OBn 4′-F

No. 72a OBn 4′-F

No. 72b OBn 4′-Cl

No. 73 OBn 3′,4′-OCH₂O—

No. 74 OBn 4′-O—iPr

No. 75 OBn 4′-CH₃

No. 76 OBn 3′-OBn

No. 77 OBn 3′-OBn

No. 78 OBn 4′-OBn, 3′-F

No. 79 OBn 4′-OBn, 3′-F

No. 80 OBn 3′-OMe

No. 81 OBn 4′-OCF₃

No. 82 OBn 4′-OBn

No. 83 OBn 4′-OBn

No. 84 OBn 3′-OMe

Experimental Procedure for 3-Methyl aminoethoxyindole Synthesis Method 6 Illustrated for Example No. 63 Substitution of the Bromide 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

A solution of example No. 50 (3.2 g, 5.0 mmol) in THF (50 mL) was treated with piperidine (5.0 mL, 50 mmol) and heated to reflux. After 5 hours, the reaction mixture was concentrated and taken up in EtOAc, washed with saturated NaHCO₃, dried over MgSO₄ and column chromatographed on silica gel using a gradient elution of EtOAc/Hexane to EtOAc. The product (2.7 g) was a white solid with a Mp=93-95° C.; ¹H NMR (DMSO) 7.48-7.46 (m, 4H), 7.42-7.38 (m, 4H), 7.38-7.32 (m, 2H), 7.29 (d, 2H, J=8.8 Hz), 7.19 (d, 1H, J=9.0 Hz), 7.12-7.10 (m, 3H), 6.80 (dd, 1H, J=8.8, 2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.93 (t, 2H, J=5.7 Hz), 2.60-2.50 (m, 2H), 2.41-2.30 (m, 4H), 2.15 (s, 3H), 1.47-1.42 (m, 4H), 1.36-1.32 (m, 2H); MS FAB 637 (M+H⁺).

Alternative Procedure Method 6a Substitution of Chlorides Synthesis Illustrated for Product No. 76 Example No. 76 5-Benzyloxy-2-(3-benzyloxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

To a solution of 1.1 g (0.00953 mol) of 5-benzyloxy-2-(3-benzyloxy-phenyl-1-[4-(2-chloro-ethoxy)-benzyl]-3-methyl-1H-indole (example No. 58) in 10 mL of DMF was added 1.1 mL (0.0112 mol) of piperidine, and 0.93 g (00561 mol) of potassium iodide. The reaction mixture was heated to ˜40-50° C. for 4 hours. After cooling the reaction mixture to room temperature, 150 mL of ethyl acetate were added and the mixture was washed with water (3×100 mL). The organic solution was collected, washed with saturated brine, removed, dried over magnesium sulfate, filtered and evaporated to yield 1.0 g of product of the product after purification.

Mp=125-126° C.; ¹H NMR (DMSO) 7.48-7.45 (d, 2H, J=7.2 Hz), 7.41-7.35 (m, 7H), 7.33-7.28 (m, 2H), 7.23-7.21 (d, 1H, J=9.0 Hz), 7.13-7.12 (d, 1H, J=2.4 Hz), 7.06-7.03 (m, 1H), 6.95-6.91 (m, 2H), 6.83-6.80 (dd, 1H, J=2.4 Hz, J=6.3 Hz), 6.75-6.70 (m, 4H), 5.13 (s, 2H), 5.11 (s, 2H), 5.02 (s, 2H), 3.93-3.90 (t, 2H, J=6.0 Hz), 2.56-2.53 (t, 2H, J=5.9 Hz), 2.49-2.48 (m, 4H), 2.14 (s, 3H), 1.46-1.40 (m, 4H), 1.35-1.31 (m, 2H); IR (KBr) 3400, 2900 cm⁻¹; MS eI m/z 636 (M+); CHN calcd for C₄₃H₄₄N₂O₃+0.25H₂O.

Physical Data for the Amine Substituted Compounds

The following compounds were prepared by scheme 13 using method 6. Except for examples No. 76-No. 84 which were prepared using method 6a.

Example No. 61 5-Benzyloxy-2-(4-ethoxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Mp=188-191° C.; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.3 Hz), 7.40-7.25 (m, 5H), 7.17 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.01 (d, 2H, J=6.8 Hz), 6.78 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 4.05 (q, 2H, J=6.8 Hz), 3.93 (t, 2H, J=6.0 Hz), 2.55 (t, 2H, J=5.7 Hz), 2.41-2.35 (m, 4H), 2.14 (s, 3H), 1.46-1.40 (m, 4H), 1.38-1.30 (m, 5H); MS eI m/z 574 (M+).

Example No. 62 5-Benzyloxy-2-phenyl-3-methyl-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Oil; ¹H NMR (DMSO) 7.50-7.43 (m, 4H), 7.42-7.37 (m, 5H), 7.33-7.30 (m, 1H), 7.22 (d, 1H, J=8.8 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.81 (d, 1H, J=6.6 Hz), 6.72 (s, 4H), 5.18 (s, 2H), 5.11 (s, 2H), 3.90 (t, 2H, J=6.1 Hz), 2.81-2.75 (m, 2H), 2.68-2.59 (m, 4H), 2.16 (s, 3H), 1.58-1.43 (m, 8H); MS eI m/z 544 (M+).

Example No. 64 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Mp=106-107° C.; ¹H NMR (DMSO) 7.47 (d, 4H, J=8.3 Hz), 7.41-7.36 (m, 4H), 7.36-7.30 (m, 2H), 7.29 (d, 2H, J=8.8 Hz), 7.19 (d, 1H, J=8.8 Hz), 7.14-7.10 (m, 3H), 6.80 (dd, 1H, J=8.8 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.90 (t, 2H, J=5.9 Hz), 2.76 (t, 2H, J=5.9 Hz), 2.64-2.56 (m, 4H), 2.15 (s, 3H), 1.58-1.44 (m, 8H); MS FAB m/z 651 (M+H+).

Example No. 65 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[4-(2-diisopropylamino-1-yl-ethoxy)-benzyl]-1H-indole

Mp=148-150° C.; ¹H NMR (DMSO) 7.47 (d, 4H, J=8.3 Hz), 7.41-7.36 (m, 4H), 7.36-7.32 (m, 2H), 7.28 (d, 2H, J=8.8 Hz), 7.19 (d, 1H, J=9.0 Hz), 7.13-7.08 (m, 3H), 6.80 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.76-6.68 (m, 4H), 5.14 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.75 (t, 2H, J=7.0 Hz), 2.95 (m, 2H), 2.67 (t, 2H, J=7.0 Hz), 2.15 (s, 3H), 0.93 (d, 12H, J=6.4 Hz); MS FAB m/z 653 (M+H+).

Example No. 66 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[4-(2-butyl-methylamino-1-ylethoxy)-benzyl]-1H-indole

Mp=101-104° C.; ¹H NMR (DMSO) 7.45 (d, 4H, J=7.5 Hz), 7.40-7.25 (m, 8H), 7.19 (d, 1H, J=8.8 Hz), 7.12-7.08 (m, 3H), 6.80 (dd, 1H, J=6.5 Hz, J=2.4 Hz), 6.72 (s, 4H), 5.14 (s, 2H), 5.13 (s, 2H), 5.10 (s, 2H), 3.91 (t, 2H, J=5.9 Hz), 2.64-2.59 (m, 2H), 2.35-2.29 (m, 2H), 2.17 (s, 3H), 2.14 (s, 3H), 1.40-1.31 (m, 2H), 1.25-1.19 (m, 2H), 0.83 (t, 3H, 7.2 Hz); MS eI m/z 638 (M+).

Example No. 66a 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-dimethylamino)-ethoxy]-benzyl}-1H-indole

Mp=123-124° C.

Example No. 67 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-[2-(2-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indole

Mp=121° C.

Example No. 68 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-[2-(3-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indole

Mp=90° C.

Example No. 69 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-[2-(4-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indole

Mp=98° C.; ¹H NMR (DMSO) 7.46 (d, 4H, J=7.2 Hz), 7.42-7.36 (m, 4H), 7.36-7.31 (m, 2H), 7.28 (d, 2H, J=8.6 Hz), 7.19 (d, 1H, J=9.0 Hz), 7.12-7.10 (m, 3H), 6.80 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.93 (t, 2H, J=5.9 Hz), 2.85-2.78 (m, 2H), 2.62-2.56 (m, 2H), 2.15 (s, 3H), 1.97-1.87 (m, 2H), 1.55-1.47 (m, 2H), 1.30-1.20 (m, 1H), 1.15-1.02 (m, 2H), 0.85 (d, 3H, J=6.6 Hz); MS esI m/z 651 (M+1)+.

Example No. 70 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-[2-((cis)-2,6-Dimethyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indole

Mp=106-107° C.; ¹H NMR (DMSO) 7.46 (d, 4H, J=8.1 Hz), 7.42-7.36 (m, 4H), 7.37-7.31 (m, 2H), 7.29 (d, 2H, J=8.8 Hz), 7.18 (d, 1H, J=8.8 Hz), 7.14-7.09 (m, 3H), 6.80 (dd, 1H, J=8.8 Hz, 2.4 Hz), 6.72 (s, 4H), 5.14 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.84 (t, 2H, J=7.0 Hz), 2.84 (t, 2H, J=6.6 Hz), 2.44-2.37 (m, 2H), 2.15 (s, 3H), 1.60-1.43 (m, 3H), 1.32-1.18 (m, 1H), 1.16-1.06 (m, 2H), 1.01 (d, 6H, J=6.2 Hz).

Example No. 71 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-{4-[2-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-yl)-ethoxy]-benzyl}-1H-indole

Mp=107° C.; MS ESI m/z 705 (M+1)+

Example No. 71a (1S,4R)-5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl{4-[2-(2-Aza-bicyclo[2.2.1]hept-2-yl)-ethoxy]-benzyl}-1H-indole

The (1S,2R)-2-aza-bicyclo[2.2.1]heptane used to substitute the bromide was prepared according to the procedure outlined in Syn. Comm. 26(3), 577-584 (1996). Mp=95-100° C.; ¹H NMR (DMSO) 7.32-6.55 (m, 21H), 5.10-4.90 (m, 6H), 3.69 (t, 2H, J=5.9 Hz), 2.65-2.5 (m, 3H), 2.10 (s, 2H), 2.0 (s, 3H), 1.50-1.0 (m, 7H).

Example No. 72 5-Benzyloxy-2-(4-fluoro-phenyl)-3-methyl-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Oil; ¹H NMR (DMSO) 7.50-7.43 (m, 2H), 7.42-7.33 (m, 4H), 7.32-7.20 (m, 4H), 7.13 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=2.4 Hz, 6.7 Hz), 6.71 (s, 4H), 5.14 (s, 2H), 5.11 (s, 2H), 3.89 (t, 2H, J=5.9 Hz), 3.20 (m, 4H), 2.74 (t, 2H, J=6.0 Hz), 2.15 (s, 3H), 1.60-1.40 (m, 8H); MS eI m/z 562 (M+).

Example No. 72a 5-Benzyloxy-2-(4-fluoro-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Oil; ¹H NMR (DMSO) 7.32-6.53 (m, 16H), 5.00 (s, 2H), 4.96 (s, 2H), 3.77 (t, 2H, J=5.8 Hz), 3.22-3.14 (m, 4H), 2.40 (t, 2H, J=5.8 Hz), 2.0 (s, 3H), 1.29-1.17 (m, 6H).

Example No. 72b 5-Benzyloxy-2-(4-chloro-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Oil; ¹H NMR (DMSO) 7.52 (d, 2H, J=8.6 Hz), 7.46 (d, 2H, J=6.8 Hz), 7.41-7.37 (m, 4H), 7.35-7.29 (m, 1H), 7.25 (d, 1H, J=9.0 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.83 (dd, 1H, J=8.8 Hz, 2.5 Hz), 6.72-6.65 (m, 4H), 5.16 (s, 2H), 5.11 (s, 2H), 3.90 (t, 2H, J=5.9 Hz), 2.55 (t, 2H, J=6.0 Hz), 2.41-2.26 (m, 4H), 2.16 (s, 3H), 1.44-1.39 (m, 4H), 1.38-1.29 (m, 2H); MS eI m/z 564 (M+).

Example No. 73 5-Benzyloxy-2-[3,4-methylenedioxy-phenyl]-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Foam; ¹H NMR (DMSO) 7.45 (d, 2H, J=7.0 Hz), 7.41-7.37 (m, 2H), 7.33-7.29 (m, 1H), 7.19 (d, 1H, J=8.8 Hz), 7.11 (d, 1H, J=2.2 Hz), 7.00 (d, 1H, J=7.9 Hz), 6.90 (d, 1H, 1.4 Hz), 6.82-6.78 (m, 2H), 6.74 (s, 4H), 6.07 (s, 2H), 5.16 (s, 2H), 5.10 (s, 2H), 3.93 (t, 2H, J=6.0 Hz), 2.56 (t, 2H, J=6.0 Hz), 2.41-2.35 (m, 4H), 2.15 (s, 3H), 1.48-1.41 (m, 4H), 1.38-1.28 (m, 2H); MS eI m/z 574 (M+).

Example No. 74 5-Benzyloxy-2-[4-isopropoxy-phenyl]-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Foam; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.7 Hz), 7.42-7.28 (m, 3H), 7.25 (d, 2H, J=8.7 Hz), 7.17 (d, 1H, J=8.7 Hz), 7.11 (d, 1H, J=2.4 Hz), 6.99 (d, 2H, J=8.6 Hz), 6.79 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.73 (s, 4H), 5.14 (s, 2H), 5.10 (s, 2H), 4.70-4.60 (m, 1H), 3.92 (t, 2H, J=5.7 Hz), 2.55 (t, 2H, 5.7 Hz), 2.40-2.30 (bs, 4H), 2.15 (s, 3H), 1.50-1.40 (m, 4H), 1.40-1.30 (m, 2H), 1.28 (d, 6H, J=6.2 Hz); MS eI m/z 588 (M+).

Example No. 75 5-Benzyloxy-2-[4-methyl-phenyl]-3-methyl-1-[4-(2 piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Oil; ¹H NMR (DMSO) 7.46 (d, 2H, J=7.2 Hz), 7.45-7.18 (m, 8H), 7.12 (d, 1H, J=2.4 Hz), 6.81 (dd, 1H, J=2.4 Hz, 8.6 Hz), 6.73 (s, 4H), 5.15 (s, 2H), 5.10 (s, 2H), 3.92 (t, 2H, J=5.9 Hz), 2.55 (t, 2H, J=5.9 Hz), 2.45-2.30 (m, 7H), 2.10 (s, 3H), 1.50-1.40 (m, 4H), 1.48-1.35 (m, 2H); MS eI m/z 544 (M+).

Example No. 77 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-5-benzyloxy-2-(3-benzyloxy-phenyl)-3-methyl-1H-indole

Mp=103-105° C.; ¹H NMR (DMSO) 7.47-7.45 (d, 2H, J=8.1 Hz), 7.41-7.35 (m, 7H), 7.32-7.29 (t, 2H, 7.0 Hz), 7.23-7.21 (d, 1H, J=8.7 Hz), 7.13-7.12 (d, 1H, J=2.1 Hz), 7.06-7.03 (m, 1H), 6.95-6.91 (m, 2H), 6.83-6.80 (m, 1H), 6.75-6.73 (m, 4H), 5.13 (s, 2H), 5.11 (s, 2H), 5.02 (s, 2H), 3.90-3.87 (t, 2H, J=6.0 Hz), 2.76-2.73 (t, 2H, J=6.0 Hz), 2.49-2.48 (m, 4H), 2.13 (s, 3H), 1.51 (s, 8H); IR 3400, 2900 cm⁻¹; MS eI m/z 650 (M+); CHN calcd for C₄₄H₄₆N₂O₃.

Example No. 78 5-Benzyloxy-2-(4-benzyloxy-3-fluoro-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Mp=125-128° C.; ¹H NMR (DMSO) 7.50-7.45 (m, 4H), 7.43-7.28 (m, 7H), 7.26-7.20 (m, 2H), 7.14-7.09 (m, 2H), 6.82 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.72 (s, 4H), 5.21 (s, 2H), 5.16 (s, 2H), 5.11 (s, 2H), 3.94 (t, 2H, J=5.8 Hz), 2.62-2.56 (m, 2H), 2.41-2.36 (m, 4H), 2.15 (s, 3H), 1.45-1.40 (m, 4H), 1.40-1.31 (m, 2H); MS eI m/Z 654 (M+); CHN calcd for C₄₃H₄₃FN₂O₃.

Example No. 79 5-Benzyloxy-2-(4-benzyloxy-3-fluoro-phenyl)-3-methyl-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Mp=122-124° C.; ¹H NMR (DMSO) 7.50-7.28 (m, 10H), 7.26-7.20 (m, 2H), 7.15-7.10 (m, 2H), 6.88-6.76 (m, 2H), 6.70 (s, 4H), 5.22 (s, 2H), 5.16 (s, 2H), 5.11 (s, 2H), 3.92-3.86 (m, 2H), 2.82-2.65 (m, 2H), 2.65-2.55 (m, 4H), 2.15 (s, 3H), 1.60-1.4 (m, 8H); MS eI m/Z 668 (M+); CHN calcd for C₄₄H₄₅FN₂O₃.

Example No. 80 5-Benzyloxy-2-(3-methoxy-phenyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-3-methyl-1H-indole

Mp 86-87° C.; ¹H NMR (DMSO) 7.50-7.49 (m, 2H), 7.46-7.31 (m, 4H), 7.24-7.21 (d, 1H, J=8.8 Hz), 7.15-7.14 (d, 1H, J=2.3 Hz), 7.00-6.93 (m, 2H), 6.88-6.81 (m, 2H), 6.75 (s, 4H), 5.18 (s, 2H), 5.12 (s, 2H), 3.96-3.92 (t, 2H, J=5.9 Hz), 3.71 (s, 3H), 2.59-2.55 (t, 2H, J=5.8 Hz), 2.37 (s, 4H), 2.18 (s, 3H), 1.49-1.42 (m, 4H), 1.37-1.34 (m, 2H); MS eI m/z 561 (M+); CHN calcd for C₃₇H₄₀N₂O₃+0.25H₂O.

Example No. 81 5-Benzyloxy-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-2-(4-trifluoromethoxy-phenyl)-1H-indole

Mp=107-108° C.; ¹H NMR (DMSO) 7.52-7.45 (m, 6H), 7.41-7.26 (m, 4H), 7.17-7.16 (d, 1H, J=2.3 Hz), 6.87-6.84 (dd, 1H, J=2.3 Hz, J=6.4 Hz), 6.75-6.68 (m, 4H), 5.18 (s, 2H), 5.13 (s, 2H), 3.95-3.91 (t, 2H, J=5.9 Hz), 2.58-2.54 (t, 2H, J=5.9 Hz), 2.38-2.34 (m, 4H), 2.17-2.15 (s, 3H), 1.49-1.42 (m, 4H), 1.35-1.34 (d, 2H, J=4.9 Hz); IR 3400, 2900, 1600 cm⁻¹; MS eI m/z 615 (M+); CHN calcd for C₃₇H₃₇F₃N₂O₃.

Example No. 82 (2-{4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethyl)-cyclohexyl-amine

Mp=87-90° C.; ¹H NMR (DMSO) 7.46 (dd, 4H, J=6.9 Hz, 0.6 Hz), 7.42-7.27 (m, 9H), 7.19 (d, 1H, J=9 Hz), 7.14-7.08 (m, 3H), 6.80 (dd, 1H, J=6.4 Hz, 2.4 Hz), 6.75-6.70 (m, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.13 (s, 2H), 3.89 (t, 2H, J=5.6), 2.84 (m, 2H), 2.48 (m, 1H), 2.14 (s, 3H), 1.80 (m, 2H), 1.65 (m, 2H), 1.61 (m, 1H), 0.96-1.19 (m, 5H); MS eI m/Z 650 (M+); CHN calcd for C₄₄H₄₆N₂O₄.

Example No. 83 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-{4-methylpiperazin-1-yl)-ethoxy]-benzyl}-1H-indole

Mp=88-91° C.; ¹H NMR (DMSO) 7.47 (m, 4H), 7.26-7.42 (m, 8H), 7.19 (d, 1H, J=8.8), 7.10-1.12 (m, 3H), 6.80 (q, 1H, J=6.3 Hz, 2.4 Hz), 6.73 (m, 4H), 5.15 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.94 (t, 2H, J=5.9 Hz), 2.59 (t, 2H), 2.42 (m, 4H), 2.29 (m, 4H), 2.15 (s, 3H), 2.12 (s, 3H); MS eI m/Z 652 (M+); CHN calcd for C₄₃H₄₅N₃O₃.

Example No. 84 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-5-benzyloxy-2-(3-methoxy-phenyl)-3-methyl-1H-indole

Mp=103-105° C.; ¹H NMR (DMSO) 7.47-7.45 (d, 2H, J=8.1 Hz), 7.41-7.35 (m, 7H), 7.32-7.29 (t, 2H, 7.0 Hz), 7.23-7.21 (d, 1H, J=8.7 Hz), 7.13-7.12 (d, 1H, J=2.1 Hz), 7.06-7.03 (m, 1H), 6.95-6.91 (m, 2H), 6.83-6.80 (m, 1H), 6.75-6.73 (m, 4H), 5.13 (s, 2H), 5.11 (s, 2H), 5.02 (s, 2H), 3.90-3.87 (t, 2 H, J=6.0 Hz), 2.76-2.73 (t, 2H, J=6.0 Hz), 2.49-2.48 (m, 4H), 2.13 (s, 3H), 1.51 (s, 8H); IR 3400, 2900 cm⁻¹; MS eI m/z 650 (M+); CHN calcd for C₄₄H₆₆N₂O₃.

Data and Procedures for Compounds from Table 11 (ER Receptor Data Table, Infra) of Text

TABLE 7

Example No. X Q Z No. 85 H H

No. 86 H 4′-OH

No. 87 OH H

No. 88 OMe 4′-OH

No. 89 OH 4′-OMe

No. 90 OMe 4′-OMe

No. 91 OMe 4′-OMe

No. 92 OH 4′-OEt

No. 93 OH 4′-OEt

No. 94 F 4′-OH

No. 95 OH H

No. 96 OH 4′-OH

No. 97 OH 4′-OH

No. 98 OH 4′-OH

No. 99 OH 4′-OH

No. 100 OH 4′-OH

No. 101 OH 4′-OH

No. 102 OH 4′-OH

No. 103 OH 4′-OH

No. 104 OH 4′-OH

No. 105 OH 4′-OH

No. 106 OH 4′-OH

No. 107 OH 4′-OH

No. 108 OH 4′-OH

No. 109 OH 4′-OH

No. 110 OH 4′-OH

No. 111 OH 4′-OH

No. 112 OH 4′-OH

No. 113 OH 4′-OH

No. 114 OH 4′-OH

No. 115 OH 4′-OH

No. 116 OH 4′-F

No. 117 OH 4′-F

No. 118 OH 3′-OMe, 4′-OH

No. 119 OH 3′,4′-OCH₂O—

No. 120 OH 4′-O—iPr

No. 121 OH 4′-O—iPr

No. 122 OH 4′-O-Cp

No. 123 OH 4′-CF₃

No. 124 OH 4′-CH₃

No. 125 OH 4′-Cl

No. 126 OH 2′,4′,-Dimethoxy

No. 127 OH 3′-OH

No. 128 OH 3′-OH

No. 129 OH 4′-OH, 3′-F

No. 130 OH 4′-OH, 3′-F

No. 131 OH 3′-OMe

No. 132 OH 4′-OCF₃

Hydrogenation of Indoles Containing Benzyl Ether(s) Method 7 Illustrated for Example No. 97 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

A suspension of 10% Pd/C (1.1 g) in EtOH was treated with a solution of No. 63 (2.2 g, 3.4 mmol) in THF/EtOH. Cyclohexadiene (6.0 mL, 63 mmol) was added and the reaction was stirred for 48 hours. The catalyst was filtered through Celite and the reaction mixture was concentrated and chromatographed on silica gel using a gradient elution of MeOH/CH₂Cl₂ (1:19 to 1:10) to yield 0.8 g of the product as a white solid. Mp=109-113° C.; CHN calc'd for C₂₉H₃₂N₂O₃+0.5H₂O; ¹H NMR 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.6 Hz), 6.84 (d, 2H, J=8.8 Hz), 6.79 (d, 1H, J=2.2 Hz), 6.74 (s, 4H), 6.56 (dd, 1H, J=8.8, 2.4 Hz), 5.09 (s, 2H), 3.95-3.93 (m, 2H), 2.60-2.51 (m, 2H), 2.39-2.38 (m, 4H), 2.09 (s, 3H), 1.46-1.45 (m, 4H), 1.35-1.34 (m, 2H); IR (KBr) 3350 (br), 2920, 1620, 1510 cm⁻¹; MS (EI) m/z 456.

Alternatively, the compounds may be dissolved in a THF/EtOH solution (or other appropriate solvent) and hydrogenated with H₂ and 10% Pd/C using either a ballon or Parr Hydrogenator. Either procedure is effective. In many of the examples, the compounds were made into acid addition salts. The procedure for the preparation of an HCl salt is given below (Method 8).

Method 8

1.0 g of Example No. 97 free base from the hydrogenation procedure above in a large test tube was dissolved in 20 mL of MeOH. This was treated with slow addition of 2.6 mL 1.0 N HCl and then 4.0 mL deionized water. The tube was partially opened to the atmosphere to encourage slow evaporation of the solvents. After about ten minutes, crystals began to appear and after 4 hours the solution was filtered and the solid crystals washed with water. The product was present as 0.42 g of white crystalline plates with a melting point of 184-185° C. The mother liquor yielded an additional crop of 0.30 g of white solid with a melting point of 177-182° C. CHN calc'd for C₂₉H₃₂N₂O₃+HCL+1H₂O.

Alternatively, the compounds can be made into quaternary ammonium salts. An example procedure for the synthesis of example No. 107 is given below (Method 9).

Method 9 Example No. 107 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol methiodide

0.8 g of example No. 97 was dissolved in 18 mL THF and treated with 2 mL of methyl iodide. The solution was heated to reflux for an hour. The reaction was allowed to come to room temperature and the solids filtered to yield 0.72 g as a crystalline solid.

Mp=214-217° C., CHN calcd for C₂₉H₃₂N₂O₃+CH₃I+0.5H₂O.

Example No. 106 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-dimethyl-1-yl-ethoxy)-benzyl]-1H-indol-5-ol methiodide

was prepared similarly to No. 106 except using No. 100 for starting material: Mp=245-250° C.; ¹H NMR (DMSO) 9.66 (s, 1H), 8.69 (s, 1H), 7.16 (d, 2H, J=8.4 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.84 (d, 1H, J=8.6 Hz), 6.81-6.75 (m, 6H), 6.56 (dd, 1H, J=2.4 Hz, 8.7 Hz), 5.12 (s, 2H), 4.34 (m, 2H), 3.70 (t, 2H, J=4.6 Hz), 3.11 (s, 9H), 2.09 (s, 3H); IR (KBr) 3250, 1500, 1250; MS eI m/z 416 (M+); CHN calcd for C₂₆H₂₈N₂O₃+1.09CH₃I+0.8H₂O.

Physical Data for Final, Deprotected Compounds

The following compounds are either free bases, HCl salts or acetate salts. They were prepared according to the procedure outlined in method 7 using the appropriate benzyl ether for precursor. Where a compound from table 1 does not contain a free phenolic functionality, then it was unnecessary to debenzylate it and method 7 not applied. The physical data for these compounds (No. 85, No. 90-No. 91) is still presented below.

Example No. 85 4-{3-Methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole} (HCl)

Mp=134-137° C.; ¹H NMR (DMSO) 10.33 (s, 1H), 7.56-7.38 (m, 6H), 7.32 (d, 1H, J=8.1 Hz), 7.14-7.0 (m, 2H), 6.80 (s, 4H), 5.24 (s, 2H), 4.28 (t, 2H, J=5.0 Hz), 3.50-3.40 (m, 4H), 3.0-2.95 (m, 2H), 2.10 (s, 3H), 1.80-1.60 (m, 5H), 1.40-1.35 (m, 1H); IR 3400, 2900, 1510, 1250 cm⁻¹; MS (+) FAB m/z 425 [M+H]⁺; CHN calcd for C₂₉H₃₂N₂O+1.0HCl+1.0H₂O.

Example No. 86 4-{3-Methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-2-yl}-phenol hydrochloride (HCl)

Mp=192-194° C.; ¹H NMR (DMSO), 10.28 (s, 1H), 9.75 (s, 1H), 7.51-7.49 (m, 1H), 7.27 (dd, 1H, J=7.0 Hz, 0.7 Hz), 7.18 (d, 2H, J=7.6 Hz), 7.09-7.02 (m, 2H), 6.86 (d, 2H, J=8.6 Hz), 6.80 (s, 4H), 5.20 (s, 2H), 4.28 (t, 2H, J=4.9 Hz), 3.50-3.35 (m, 4H), 3.0-2.85 (m, 2H), 2.20 (s, 3H), 1.80-1.60 (m, 5H), 1.40-1.30 (m, 1H); IR 3400, 3100, 2600, 1500, 1225 cm⁻¹; MS eI m/z 440 (M+); CHN calc for C₂₉H₃₂N₂O₂+1HCl.

Example No. 87 3-Methyl-2-phenyl-1-[4-(2-piperidine-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Mp=228-230° C.; ¹H NMR 10.1 (brs, 1H), 8.76 (s, 1H), 7.55-7.45 (m, 5H), 7.10 (d, 1H, J=8.8 Hz), 6.85-6.80 (m, 5H), 6.61 (d, 1H, J=8.8 Hz), 5.15 (s, 2H), 4.25 (t, 2H, J=4.8 Hz), 3.47-3.35 (m, 4H), 2.96-2.87 (m, 2H), 2.12 (s, 3H), 1.75-1.65 (m, 5H), 1.31-1.28 (m, 1H); MS eI m/z 440 (M+); CHN calcd for C₂₉H₃₂N₂O₂+1HCL+0.33H₂O; IR (KBr) 3200, 2500, 1450, 1200 cm−1.

Example No. 88 4-{5-Methoxy-3-methyl-1-{4-[2-(piperidin-1-yl)-ethoxy]-benzyl}-1H-indol-2-yl}-phenol

Mpt=87-90° C.; ¹H NMR (DMSO) 9.67 (s, 1H), 7.16 (d, 2H, J=8.6 Hz), 7.16 (1H buried), 6.98 (d, 1H, J=2.4 Hz), 6.85 (d, 2H, J=8.6 Hz), 6.73 (s, 4H), 6.69 (dd, 1H, J=8.8, 2.4 Hz), 5.13 (s, 2H), 3.94 (t, 2H, J=5.7 Hz), 3.76 (s, 3H), 2.63-2.50 (m, 2H), 2.43-2.31 (m, 4H), 2.15 (s, 3H), 1.49-1.40 (m, 4H), 1.39-1.25 (m, 2H); IR (KBr) 3400 (br), 2920, 1610, 1520 cm⁻¹; MS eI m/z 470; CHN calcd for C₃₀H₃₄N₂O₃+0.1H₂O.

Example No. 89 2-(4-methoxy-phenyl)-3-methyl-1-{4-[2-(piperidin-1-yl)-ethoxy]-benzyl}-1H-indol-5-ol

Mp=188-189° C.; ¹H NMR (DMSO) 8.70 (s, 1H), 7.27 (d, 2H, J=8.6 Hz), 7.06 (d, 1H, J=8.6 Hz), 7.02 (d, 2H, J=8.8 Hz), 6.81 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.58 (dd, 1H, J=8.8, 2.4 Hz), 5.10 (s, 2H), 3.93 (t, 2H, J=5.9 Hz), 3.79 (s, 3H), 2.56 (t, 2H, J=5.9 Hz), 2.41-2.32 (m, 4H), 2.10 (s, 3H), 1.47-1.41 (m, 4H), 1.34-1.31 (m, 2H); MS eI m/z 470; CHN calcd for C₃₀H₃₄N₂O₃+0.1H₂O.

Example No. 90 5-Methoxy-2-(4-methoxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole (HCL)

Mp=188-191° C.; ¹H NMR (DMSO) 10.35 (brs, 1H), 7.27 (d, 2H, J=8.8 Hz), 7.17 (d, 1H, J=8.8 Hz), 7.03 (d, 2H J=8.6 Hz), 6.99 (d, 1H, J=2.5 Hz), 6.82-6.78 (m, 4H), 6.71 (dd, 1H, J=8.8 Hz, J=2.5 Hz), 5.17 (s, 2H), 4.31-4.22 (m, 2H), 3.79 (s, 3H), 3.76 (s, 3H), 3.43-3.36 (m, 4H), 2.97-2.83 (m, 2H), 2.16 (s, 3H), 1.80-1.59 (m, 5H), 1.41-1.26 (m, 1H); IR (KBr) 2920, 1450, 1250 cm−1; MS eI m/z 484 (M+); CHN calc for C₃₁H₃₆N₂O₃+1 HCL.

Example No. 91 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-5-methoxy-2-(4-methoxy-phenyl)-3-methyl-1H-indole (HCL)

Mp=161-163° C.; ¹H NMR (DMSO) 10.65 (brs, 1H), 7.27 (d, 2H, J=8.8 Hz), 7.17 (d, 1H, J=8.8 Hz), 7.03 (d, 2H J=8.6 Hz), 6.99 (d, 1H, J=2.5 Hz), 6.82-6.77 (m, 4H), 6.71 (dd, 1H, J=8.8 Hz, J=2.5 Hz), 5.17 (s, 2H), 4.27 (m, 2H), 3.79 (s, 3H), 3.76 (s, 3H), 3.44-3.30 (m, 4H), 3.17 (m, 2H), 2.16 (s, 3H), 1.82-1.77 (m, 4H), 1.63-1.48 (m, 4H); MS eI m/z 499 (M+); CHN calc for C₃₂H₃₈N₂O₃+1HCl.

Example No. 92 2-(4-Ethoxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=173-175° C.; ¹H NMR (DMSO) 8.69 (s, 1H), 7.25 (d, 2H, J=8.8 Hz), 7.04 (d, 1H, J=8.8 Hz), 6.99 (dd, 2H, J=6.8 Hz, J=2.0 Hz), 6.80 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.59 (dd, 1H, J=8.5 J=2.2), 5.09 (s, 2H), 4.05 (q, 2H, J=7.03 Hz), 3.93 (t, 2H, J=6.0 Hz), 2.62-2.56 (m, 2H), 2.41-2.36 (m, 4H), 2.09 (s, 3H), 1.45-1.41 (m, 4H), 1.38-1.30 (m, 5H); MS eI m/z 484 (M+); CHN calc for C₃₁H₃₆N₂O₃+0.25H₂O.

Example No. 93 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-ethoxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=133-135° C.; ¹H NMR (DMSO) 8.69 (s, 1H), 7.25 (d, 2H, J=8.8 Hz), 7.04 (d, 1H, J=8.8 Hz), 6.99 (dd, 2H, J=6.8 Hz, J=2.0 Hz), 6.80 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.59 (dd, 1H, J=8.5 Hz, J=2.2 Hz), 5.09 (s, 2H), 4.05 (q, 2H, J=7.03 Hz), 3.90 (t, 2H, J=6.1 Hz), 2.75 (t, 2H, J=6.0 Hz), 2.62-2.58 (m, 4H), 2.09 (s, 3H), 1.58-1.44 (m, 8H), 1.33 (t, 3H, J=7.0 Hz); IR (KBr) 2930, 1470, 1250 CM⁻¹; MS eI m/z 498 (M+); CHN calc for C₃₂H₃₈N₂O₃.

Example No. 94 4-{5-Fluoro-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-2-yl}-phenol (HCl)

Mp=223-225° C.; ¹H NMR (DMSO) 10.30 (br s, 1H), 7.27-7.23 (m, 2H), 7.17 (d, 2H, J=8.6 Hz), 6.88-6.79 (m, 7H), 5.20 (s, 2H), 4.28 (t, 2H, J=5.0 Hz), 3.42-3.35 (m, 4H), 3.00-2.85 (m, 2H), 2.14 (s, 3H), 1.78-1.70 (m, 4H), 1.67-1.59 (m, 1H), 1.40-1.26 (m, 1H); MS eI m/z 458 (M+).

Example No. 95 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-3-methyl-2-phenyl-1H-indol-5-ol (HCl)

Mp=203-204° C.; ¹H NMR (DMSO) 10.50 (brs, 1H), 8.80 (s, 1H), 7.50-7.38 (m, 5H); 7.10 (d, 1H, J=8.8 Hz), 6.83-6.77 (m, 5H), 6.60 (d, 1H, J=6.6 Hz), 5.15 (s, 2H), 4.26 (t, 2H, J=5.2 Hz), 3.45-3.35 (m, 4H), 3.21-3.10 (m, 2H), 2.12 (s, 3H), 1.85-1.75 (m, 4H), 1.70-1.51 (m, 4H); MS eI m/z 454 (M+); CHN calc for C₃₀H₃₄N₂O₂+1 HCl.

Example No. 96 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-pyrollidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=105-110° C.; CHN calc'd for C₂₈H₃₀N₂O₃+0.4H₂O; ¹H NMR (DMSO) 9.65 (s, 1H), 8.67 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.6 Hz), 6.84 (d, 2H, J=2H), 6.79 (d, 1H, J=2.4 Hz), 6.56 (dd, 1H, J=8.6, 2.2 Hz), 6.74 (s, 4H), 5.09 (s, 2H), 3.95 (t, 2H, J=5.7 Hz), 3.39-3.23 (m, 4H), 2.80-2.75 (m, 2H), 2.09 (s, 3H), 1.67-1.64 (m, 4H); IR (KBr) 3410 (br), 1620, 1510 cm⁻¹; MS (EI) m/z 442

Example No. 97 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol (HCl)

Mp=168-171° C.; ¹H NMR (DMSO) 10.11 (br s, 1H), 9.70 (s, 1H), 8.71 (s, 1H); 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.85 (d, 2H, J=8.8 Hz), 6.80-6.77 (m, 5H), 6.56 (dd, 1H, J=8.8 Hz, 2.2 Hz), 5.11 (s, 2H), 4.26 (t, 2H, J=4.6 Hz), 3.48-3.30 (m, 4H), 3.22-3.08 (m, 2H), 2.09 (s, 3H), 1.83-1.76 (m, 4H), 1.67-1.48 (m, 4H); IR (KBr) 3500 br, 3250 br, 2900, 1610; MS FAB m/z 471 (M+H+); CHN calcd for C₃₀H₃₄N₂O₃+2.5H₂O+HCl.

Example No. 98 Acetate Salt of Example No. 97

Made by the precipitation of No. 97 free base from acetone and acetic acid.

Mp=174-178° C.

Example No. 99 1-[4-(2-Azocan-1-yl-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=98-102° C.; ¹H NMR (DMSO) 9.63 (s, 1H), 8.68 (s, 1H), 7.15-7.13 (m, 2H), 7.05 (d, 1H, J=8.5 Hz), 6.83 (dd, 2H, J=2.0 Hz, 6.6 Hz), 6.79 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.55 (dd, 1H, J=2.2 Hz, 8.6 Hz), 5.08 (s, 2H), 3.89 (t, 2H, J=5.7 Hz), 2.74 (t, 2H, J=5.4 Hz), 2.55 (bs, 4H), 2.08 (s, 3H), 1.55 (s, 2H), 1.46 (s, 8H); IR 3400, 2900, 1250 cm⁻¹; MS eI m/z 484 (M+); CHN calcd for C₃₁H₃₆N₂O₃+0.30H₂O.

Example No. 100 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-dimethyl-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=95-105° C.; IR (KBr) 3400 br, 2900, 1610 cm⁻¹; MS eI m/z 416 (M+); CHN calcd for C₂₆H₂₈N₂O₃+0.5H₂O.

Example No. 101 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-diethyl-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=100-107° C.; CHN calc'd for C₂₈H₃₂N₂O₃+0.25H₂O; ¹H NMR (DMSO) 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.84 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, 2.2 Hz), 6.74 (s, 4H), 6.56 (dd, 1H, J=8.8, 2.4 Hz), 5.09 (s, 2H), 3.95-3.85 (m, 2H), 2.80-2.60 (m, 2H), 2.58-2.40 (m, 4H), 2.09 (s, 3H), 0.93 (t, 6H, J=7.0 Hz); IR (KBr) 3410 (br), 2950, 1610, 1510 cm⁻¹; MS FAB 445 (M+H+).

Example No. 102 1-[4-(2-Dipropylamino-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=83-86° C.; ¹H NMR (DMSO) 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.6), 7.04 (d, 1H, J=8.6 Hz), 6.83 (d, 2H, J=8.6 Hz), 6.78 (d, 1H, J=2.2 Hz), 6.72 (m, 4H), 6.55 (dd, 1H, J=2.4 Hz, 8.2 Hz), 5.08 (s, 2H), 3.88 (t, 2H, J=6.0 Hz), 2.80-2.63 (m, 2H), 2.59-2.45 (m, 4H), 2.10 (s, 3H), 1.41-1.30 (m, 4H), 0.79 (t, 6H, J=7.3 Hz); IR 3400, 2900, 1250; MS FAB m/z 473 [M+H⁺]; CHN calcd for C₃₀H₃₆N₂O₃+0.20H₂O.

Example No. 103 1-[4-(2-Dibutylamino-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Foam; ¹H NMR (DMSO) 9.63 (s, 1H), 8.66 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.83 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, J=4.2 Hz), 6.78-6.71 (m, 4H), 6.55 (dd, 1H, J=8.6 Hz J=2.4 Hz), 5.10 (s, 2H), 3.88 (t, 2H, J=5.5 Hz), 2.68-2.62 (m, 2H), 2.42-2.34 (m, 4H), 2.08 (s, 3H), 1.38-1.19 (m, 8H), 0.82 (t, 6H, J=7.2 Hz); IR (KBr) 3400, 1450 cm-1; MS eI m/z 501 (M+).

Example No. 104 1-[4-(2-Diisopropylamino-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=96-102° C.; ¹H NMR (DMSO) 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.04 (d, 1H, J=8.6 Hz), 6.83 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, J=2.4 Hz), 6.77-6.69 (m, 4H), 6.56 (dd, 1H, J=8.6 Hz, 2.2 Hz), 5.08 (s, 2H), 3.75 (t, 2H, J=7.0 Hz), 3.01-2.92 (m, 2H), 2.67 (t, 2H, J=7.0 Hz), 2.09 (s, 3H), 0.93 (d, 12H, 6.6 Hz); IR (KBr) 3400 br, 2940, 1620 cm⁻¹; MS FAB m/z 473 (M+H+); CHN calcd for C₃₀H₃₆N₂O₃+0.5H₂O.

Example No. 105 1-{4-[2-(Butyl-methyl-amino)-ethoxy]-benzyl}-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=102-107° C.; ¹H NMR (DMSO) 9.60 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.4 Hz), 7.04 (d, 1H, J=8.6 Hz), 6.82 (d, 2H, J=8.8 Hz), 6.78 (d, 1H, J=2.3 Hz), 6.73 (s, 4H), 6.55 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 5.08 (s, 2H), 3.92 (t, 2H, J=6.0 Hz), 2.64-2.59 (m, 2H), 2.38-2.29 (m, 2H), 2.20 (br s, 3H), 2.08 (s, 3H), 1.40-1.31 (m, 2H), 1.25-1.19 (m, 2H), 0.83 (t, 3H, 7.2 Hz); IR (KBr) 3420, 1460, 1230 cm⁻¹; MS eI m/z 638 (M+).

Example No. 108 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[2-(2-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indol-5-ol

Mp=121-123° C.; ¹H NMR (DMSO) 9.65 (s, 1H), 8.68 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.04 (d, 1H, J=8.8 Hz), 6.84 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, J=2.0 Hz), 6.74 (s, 4H), 6.56 (dd, 1H, J=8.8 Hz, 2.4 Hz), 5.09 (s, 2H), 3.97-3.86 (m, 2H), 2.95-2.73 (m, 2H), 2.62-2.53 (m, 1H), 2.36-2.14 (m, 2H), 2.09 (s, 3H), 1.61-1.30 (m, 4H), 1.28-1.09 (m, 2H), 0.98 (d, 3H, J=5.1 Hz); IR (KBr) 3400, 2920, 2850, 1610 cm⁻¹; CHN calcd for C₃₀H₃₄N₂O₃+0.25H₂O.

Example No. 109 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[2-(3-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indol-5-ol

Mp=121-123° C.; ¹H NMR (DMSO) 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (dd, 2H, J=8.3 Hz, 1.4 Hz), 7.04 (dd, 1H, J=8.6 Hz, 1.2 Hz), 6.84 (dd, 2H, J=8.6 Hz, 1.7 Hz), 6.79 (s, 1H), 6.79 (s, 4H), 6.56 (d, 1H, J=8.6 Hz), 5.08 (s, 2H), 3.94 (t, 2H, J=5.0 Hz), 2.86-2.71 (m, 2H), 2.63-2.50 (m, 2H), 2.48 (s, 3H), 1.92-1.79 (m, 2H), 1.63-1.35 (m, 5H), 0.79 (d, 3H, J=5.2 Hz); IR (KBr) 3400, 2910, 1625 cm⁻¹; CHN calcd for C₃₀H₃₄N₂O₃+0.25H₂O.

Example No. 110 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[2-(4-methyl-piperidin-1-yl)-ethoxy]-benzyl}-1H-indol-5-ol (HCl)

Mp=154-162° C.; ¹H NMR (DMSO) 10.00 (brs, 1H), 9.71 (s, 1H), 8.71 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.6 Hz), 6.85 (d, 2H, J=8.6 Hz), 6.83-6.77 (m, 4H), 6.57 (dd, 1H, J=8.6 Hz, 2.2 Hz), 5.11 (s, 2H), 4.27 (t, 2H, J=4.8 Hz), 3.51-3.35 (m, 4H), 3.01-2.87 (m, 2H), 2.09 (s, 3H), 1.74 (d, 2H, J=13.4 Hz), 1.61-1.37 (m, 4H), 0.88 (d, 3H, J=6.4 Hz); IR (KBr) 3410, 2910, 1620 cm⁻¹; MS eI m/z 470 (M+H+); CHN calcd for C₃₀H₃₄N₂O₃+HCl+2H₂O.

Example No. 111 1-{4-[2-(3,3-Dimethyl-piperidin-1-yl)-ethoxy]-benzyl}2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=100° C.; ¹H NMR (DMSO) 9.65 (s, 1H), 8.67 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.84 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, J=2.4 Hz), 6.74 (s, 4H), 6.56 (dd, 1H, J=8.8, 2.4 Hz), 5.09 (s, 2H), 3.93 (t, 2H, J=5.7 Hz), 2.60-2.50 (m, 2H), 2.37-2.25 (m, 2H), 2.09 (s, 3H), 2.10-1.99 (m, 2H), 1.46 (t, 2H, J=5.9 Hz), 1.13 (t, 2H, J=6.4 Hz), 0.86 (s, 6H); MS eI m/z 484.

Example No. 112 1-{4-[2-((cis)-2,6-Dimethyl-piperidin-1-yl)-ethoxy]-benzyl}-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=114-121° C.; ¹H NMR (DMSO) 9.62 (s, 1H), 8.64 (s, 1H), 7.11 (d, 2H, J=8.6 Hz), 7.01 (d, 1H, J=8.6 Hz), 6.81 (d, 2H, J=8.8 Hz), 6.76 (d, 1H, J=2.2 Hz), 6.72-6.66 (m, 4H), 6.53 (dd, 1H, J=8.6 Hz, 2.2 Hz), 5.06 (s, 2H), 3.86-3.72 (m, 2H), 2.86-2.76 (m, 2H), 2.43-2.35 (m, 2H), 2.06 (s, 3H), 1.78-1.59 (m, 3H), 1.29-1.17 (m, 1H), 1.12-0.92 (m, 8H); IR (KBr) 3400 br, 2920, 1630 cm⁻¹; MS FAB m/z 485 (M+H+); CHN calcd for C₃₁H₃₆N₂O₃+0.1 acetone+0.75H₂O.

Example No. 113 2-(4-Hydroxy-phenyl)-1-{4-[2-(4-hydroxy-piperidin-1-yl)-ethoxy]-benzyl}-3-methyl-1H-indol-5-ol

Mp=80-90° C.; ¹H NMR (DMSO) 9.66 (s, 1H), 8.68 (s, 1H), 7.15 (d, 2H, J=7.6 Hz), 7.04 (d, 1H, J=8.8 Hz), 6.84 (dd, 2H, J=2.0 Hz, 6.6 Hz), 6.78 (d, 1H, 2.2 Hz), 6.73 (s, 4H), 6.55 (dd, 1H, J=2.2 Hz, 8.6 Hz), 5.09 (s, 2H), 4.50 (d, 1H, J=4.2 Hz), 3.92 (t, 2H, J=5.8 Hz), 3.40 (m, 2H), 2.72 (m, 2H), 2.60 (m, 2H), 2.10 (s, 3H), 2.15-2.05 (m, 1H), 1.75-1.63 (m, 2H), 1.42-1.28 (m, 2H); IR (KBr) 3400, 2900, 1250 cm⁻¹; MS eI m/z 472 (M+); CHN calcd for C₂₉H₃₂N₂O₄+0.11CH₂Cl₂.

Example No. 114 (1S,4R)-1-{4-[2-(2-Aza-bicyclo[2.2.1]hept-2-yl)-ethoxy]-benzyl}-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol

Mp=125-130° C.; ¹H NMR (DMSO) 9.65 (s, 1H), 8.67 (s, 1H), 7.13 (d, 2H, J=8.6 Hz), 7.04 (d, 1H, J=8.5 Hz), 6.83 (dd, 2H, J=2.0 Hz, 6.6 Hz), 6.78 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.55 (dd, 1H, J=2.2 Hz, 8.6 Hz), 5.08 (s, 2H), 3.95-3.8 (m, 2H), 2.90-2.70 (3H), 2.30-2.20 (m, 2H), 2.10 (s, 3H), 1.70-1.60 (m, 1H), 1.60-1.30 (m, 4H), 1.25-1.15 (m, 2H); IR (KBr) 3400, 2950, 1500; MS (+) FAB m/z 469 [M+H]⁺; CHN calcd for C₃₀H₃N₂O₃+0.34 EtOAc.

Example No. 115 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[2-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-yl)-ethoxy]-benzyl}-1H-indol-5-ol

Mp=98-100° C.; ¹H NMR (DMSO) 9.64 (s, 1H), 8.67 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.6 Hz), 6.84 (d, 2H, J=8.6 Hz), 6.79 (d, 1H, J=2.4 Hz), 6.75-6.69 (m, 4H), 6.56 (dd, 1H, J=8.6 Hz, 2.4 Hz), 5.08 (s, 2H), 3.83 (t, 2H, J=5.9 Hz), 3.12-3.07 (m, 1H), 2.94-2.87 (m, 1H), 2.85 (d, 1H, J=9.2 Hz), 2.78-2.70 (m, 1H), 2.17 (d, 1H, J=9.2 Hz), 2.09 (s, 3H), 1.55-1.42 (m, 2H), 1.29 (q, 2H, J=13.6 Hz), 1.14 (s, 3H), 1.11-1.02 (m, 2H), 0.96 (s, 3H), 0.82 (s, 3H); IR (KBr) 3400 br, 2940, 2900, 1630 cm⁻¹; MS ESI m/z 525 (M+H+); CHN calcd for C₃₄H₄₀N₂O₃+0.5H₂O.

Example No. 116 2-(4-Fluoro-phenyl)-3-methyl-1-[4-(2-piperidine-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Mp=201-203° C.; ¹H NMR (DMSO) 10.22 (s, 1H), 8.78 (s, 1H), 7.45-7.35 (m, 2H), 7.34-7.25 (m, 2H), 7.11 (d, 1H, J=8.6 Hz), 6.90-6.70 (m, 5H), 6.61 (dd, 1H, J=2.4 Hz, 8.8 Hz), 5.15 (s, 2H), 4.27 (t, 2H, 4.8 Hz), 3.50-3.34 (m, 4H), 3.0-2.85 (m, 2H), 2.10 (s, 3H), 1.80 (m, 5H), 1.40-1.25 (m, 1H); MS eI m/z 458 (M+); CHN calcd for C₂₉H₃₁FN₂O₂+1HCl.

Example No. 117 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-fluoro-phenyl)-3-methyl-1H-indol-5-ol

Mp=181-184° C.; ¹H NMR (DMSO) 10.68 (s, 1H), 8.80 (s, 1H), 7.50-7.36 (m, 2H), 7.34-7.26 (m, 2H), 7.12 (d, 1H, J=8.8 Hz), 6.86-6.73 (m, 5H), 6.63 (dd, 1H, J=2.2 Hz, 8.5 Hz), 5.13 (s, 2H), 4.29 (t, 2H, J=5.2 Hz), 3.50-3.30 (m, 4H), 3.20-3.08 (m, 2H), 2.11 (s, 3H), 1.90-1.70 (m, 4H), 1.68-1.45 (m, 4H); IR (KBr) 3500, 3100, 2910, 1450, 1250 cm⁻¹; MS e/I m/z 472 (M+); CHN calcd for C₃₀H₃₃FN₂O₂+1HCl.

Example No. 118 2-(3-Methoxy-4-hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Mp=161-163° C.; ¹H NMR (DMSO) 10.12 (brs, 1H), 9.25 (s, 1H), 8.71 (s, 1H), 7.05 (d, 1H, J=8.5 Hz), 6.85-6.79 (m, 8H), 6.57 (dd, 1H, J=8.5 Hz, J=2.2 Hz), 5.13 (s, 2H), 4.27 (t, 2H, J=5.0 Hz), 3.64 (s, 3H), 3.44-3.37 (m, 4H), 2.93-2.85 (m, 2H), 2.11 (s, 3H), 1.80-1.60 (m, 5H), 1.40-1.25 (m, 1H); MS eI m/z 486 (M+); CHN calc for C₃₀H₃₄N₂O₄+1HCL+1H₂O; IR (KBr) 3190, 1470, 1230 cm⁻¹.

Example No. 119 2-Benzo[1.3]dioxol-5-yl-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCL)

Mp=122-125° C.; ¹H NMR (DMSO) 9.80 (brs, 1H), 8.73 (s, 1H), 7.07 (d, 1H, J=8.7 Hz), 7.02 (d, 1H, J=8.0 Hz), 6.89 (d, 1H, J=1.7 Hz), 6.80-6.75 (m, 6H), 6.58 (dd, 1H, J=6.4 Hz, J=2.2 Hz), 6.06 (s, 2H), 5.13 (s, 2H), 4.30-4.19 (m, 2H), 3.51-3.30 (m, 4H), 2.99-2.85 (m, 2H), 2.10 (s, 3H), 1.81-1.59 (m, 5H), 1.41-1.26 (m, 1H); MS eI m/z 484 (M+); CHN calc for C₃₀H₃₂N₂O₄+HCl+0.26H₂O.

Example No. 120 2-(4-Isopropoxy-phenyl)-3-methyl-1-[4-(2-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Mp=120-125° C.; ¹H NMR (DMSO) 10.18 (s, 1H), 8.73 (s, 1H), 7.25 (d, 2H, J=8.6 Hz), 7.04 (d, 1H, J=8.8 Hz), 6.99 (d, 2H, J=8.8 Hz), 6.82-6.80 (m, 5H), 6.59 (dd, 1H, J=2.2 Hz, 8.6 Hz), 5.12 (s, 2H), 4.67-4.61 (m, 1H), 4.27 (t, 2H, J=4.8 Hz), 3.50-3.35 (m, 4H), 3.0-2.85 (m, 2H), 2.10 (s, 3H), 1.80-1.60 (m, 5H), 1.40-1.25 (m, 7H); IR (KBr) 3400, 3000, 1500, 1250; MS eI m/z 498 (M+); CHN calcd for C₃₂H₃₈N₂O₃+1.0 HCl+0.70H₂O.

Example No. 121 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-isopropoxy-phenyl)-3-methyl-1H-indol-5-ol (HCl)

Mp=120-125° C.; ¹H NMR (DMSO) 10.36 (s, 1H), 8.73 (s, 1H), 7.26-7.23 (m, 2H), 7.05 (d, 1H, J=8.8 Hz), 7.01-6.98 (m, 2H), 6.85-6.75 (m, 5H), 6.57 (dd, 1H, J=2.2 Hz, 8.6 Hz), 5.12 (s, 2H), 4.67-4.61 (m, 1H), 4.27 (t, 2H, J=4.8 Hz), 3.50-3.30 (m, 4H), 3.20-3.10 (m, 2H), 2.10 (s, 3H), 1.85-1.75 (m, 4H), 1.65-1.50 (m, 4H), 1.27 (d, 6H, J=6.1 Hz); IR (KBr) 3400, 1500, 1250: MS eI m/z 512 (M+); Calcd for C₃₃H₄₀N₂O₃+1.0HCl+0.5H₂O.

Example No. 122 2-(4-Cyclopenyloxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=121-135° C.; ¹H NMR (DMSO) 9.80 (br s, 1H), 8.72 (s, 1H), 7.24 (d, 2H, J=8.8 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.98 (d, 2H, J=8.8 Hz), 6.83-6.78 (m, 5H), 6.57 (dd, 1H, J=8.8 Hz, 2.4 Hz), 5.13 (s, 2H), 4.86-4.82 (m, 1H), 4.25 (t, 2H, J=4.8 Hz), 3.50-3.38 (m, 4H), 2.92 (q, 2H, J=8.8 Hz), 2.11 (s, 3H), 1.98-1.85 (m, 2H), 1.81-1.56 (m, 11H), 1.41-1.29 (m, 1H); IR (KBr) 3400, 2920, 1620 cm⁻¹; MS eI m/z 524 (M+); CHN calcd for C₃₄H₄₀N₂O₃+0.5H₂O.

Example No. 123 3-Methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-2-(4-trifluoromethyl-phenyl)-1H-indol-5-ol

Mp=174° C.; ¹H NMR (DMSO) 8.8 (s, 1H), 7.82 (d, 2H, J=8.1 Hz), 7.59 (d, 2H, J=7.9 Hz), 7.17 (d, 1H, J=8.6 Hz), 6.86 (d, 1H, J=2.4 Hz), 6.75-6.68 (m, 4H), 6.65 (dd, 1H, J=8.8 Hz, 2.4 Hz), 5.16 (s, 2H), 3.93 (t, 2H, J=5.7 Hz), 2.62-2.56 (m, 2H), 2.42-2.32 (m, 4H), 2.15 (s, 3H), 1.48-1.40 (m, 4H), 1.39-1.29 (m, 2H); IR (KBr) 3410, 2910, 2850, 1620 cm⁻¹; MS eI m/z 508 (M+); CHN calcd for C₃₀H₃₁F₃N₂O₂+0.25H₂O.

Example No. 124 3-Methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-2-p-tolyl-1H-indol-5-ol

Mp=162-164° C.; ¹H NMR (DMSO) 8.70 (s, 1H), 7.28-7.24 (m, 4H), 7.07 (d, 1H, J=8.4 Hz), 6.81 (d, 1H, J=2.2 Hz), 6.73 (s, 4H), 6.58 (dd, 1H, J=2.4 Hz, 8.8 Hz), 5.11 (s, 2H), 3.92 (t, 2H, J=5.9 Hz), 2.55 (t, 2H, J=5.9 Hz), 2.45-2.30 (m, 7H), 2.10 (s, 3H), 1.50-1.40 (m, 4H), 1.48-1.35 (m, 2H); IR (KBr) 3400, 2900, 1200; MS eI m/z 454 (M+); CHN calcd for C₃₀H₃₄N₂O₂.

Example No. 125 2-(4-Chloro-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCL)

Mp=161-164° C.; ¹H NMR (DMSO) 10.12 (brs, 1H), 8.80 (s, 1H), 7.53 (d, 2H, J=8.3 Hz), 7.36 (d, 2H, J=8.8 Hz), 7.12 (d, 1H, J=8.8 Hz), 6.85-6.75 (m, 5H), 6.63 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 5.14 (s, 2H), 4.29-4.22 (m, 2H), 3.45-3.36 (m, 4H), 2.97-2.84 (m, 2H), 2.11 (s, 3H), 1.83-1.61 (m, 5H), 1.37-1.25 (m, 1H); MS eI m/z 475 (M+); CHN calc for C₂₉H₃₁ClN₂O₂+HCL+0.25H₂O.

Example No. 126 2-(2,4-Dimethoxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=85-92° C.; ¹H NMR (DMSO) 8.62 (s, 1H), 7.10 (d, 1H, J=8.4 Hz), 7.01 (d, 1H, J=8.6 Hz), 6.80-6.70 (m, 5H), 6.69 (d, 1H, 2.2 Hz), 6.59 (dd, 1H, J=2.4 Hz, 8.5 Hz), 6.52 (dd, 1H, J=2.4 Hz, 8.8 Hz), 5.02 (d, 1H, J=6.5 Hz), 4.83 (d, 1H, J=6.3 Hz), 4.0-3.90 (m, 2H), 3.80 (s, 3H), 3.67 (s, 3H), 2.65-2.50 (m, 2H), 2.45-2.30 (m, 4H), 2.0 (s, 3H), 1.55-1.40 (m, 4H), 1.39-1.30 (m, 2H); IR (KBr) 3400, 2900, 1520, 1250; MS eI m/z 500 (M+); CHN calcd for C₃₁H₃₆N₂O₄+0.05 CH₂Cl₂.

Example No. 127 2-(3-Hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=115-118° C.; ¹H NMR (DMSO) 9.57 (s, 1H), 8.71 (s, 1H), 7.27-7.23 (t, 1H, J=8.1 Hz), 7.06-7.04 (d, 1H, J=8.8 Hz), 6.81-6.74 (m, 8H), 6.59-6.56 (dd, 1H, J=2.3 Hz, J=6.3 Hz), 5.12 (s, 2H), 3.94-3.91 (t, 2H, J=5.9 Hz), 2.57-2.54 (t, 2H, J=5.8 Hz), 2.36 (s, 4H), 2.11 (s, 3H), 1.45-1.41 (m, 4H), 1.34-1.33 (m, 2H); IR (KBr) 3400, 2900 cm⁻¹; MS eI m/z 456 (M+); CHN calcd for C₂₉H₃₂N₂O₃+1.0H₂O.

Example No. 128 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(3-hydroxy-phenyl)-3-methyl-1H-indole-5-ol

Mp=94-97° C.; ¹H NMR (DMSO) 9.58 (s, 1H), 8.71 (s, 1H), 7.27-7.23 (t, 1H, J=7.9 Hz), 7.07-7.04 (d, 1H, J=8.7 Hz), 6.81-6.74 (m, 8H), 6.59-6.56 (dd, 1H, J=2.4 Hz, J=6.3 Hz), 5.12 (s, 2H), 3.9 (m, 2H), 2.80 (s, 2H), 2.65 (s, 4H), 2.11 (s, 3H), 1.54-1.50 (m, 8H); IR 3400, 2900 cm⁻¹; MS eI m/z 470 (M+); CHN calcd for C₃₀H₃₄N₂O₃+0.75H₂O+0.23 Ethyl Acetate.

Example No. 129 2-(3-Fluoro-4-hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=117-119° C.; ¹H NMR (DMSO) 10.1 (s, 1H), 8.71 (s, 1H), 7.10-6.95 (m, 4H), 6.80 (d, 1H, J=2.2 Hz), 6.74 (s, 4H), 6.59 (dd, 1H, J=2.2 Hz, 8.5 Hz), 5.1 (s, 2H), 3.93 (t, 2H, J=5.9 Hz), 2.56 (t, 2H, J=5.8 Hz), 2.44-2.30 (m, 4H), 2.10 (s, 3H), 1.45-1.40 (m, 4H), 1.36-1.32 (m, 2H); MS eI m/Z 475 (M+); CHN calcd for C₂₉H₃₁FN₂O₃.

Example No. 130 2-(3-Fluoro-4-hydroxy-phenyl)-3-methyl-1-[4-(azepan-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Mp=88-91° C.; ¹H NMR (DMSO) 10.10 (s, 1H), 8.71 (s, 1H), 7.12-6.94 (m, 4H), 6.80 (d, 1H, J=2.2 Hz), 6.74 (s, 4H), 6.58 (dd, 1H, J=2.2 Hz, 8.5 Hz), 5.10 (s, 2H), 3.91 (t, 2H, J=5.9 Hz), 2.76 (t, 2H, J=5.9), 2.62-2.60 (m, 4H), 2.10 (s, 3H), 1.70-1.40 (m, 8H); MS eI m/Z 488 (M+); CHN calcd for C₃₀H₃₃FN₂O₃.

Example No. 131 2-(3-Methoxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole-5-ol

Mp=120-123° C.; ¹H NMR (DMSO) 8.76 (s, 1H), 7.42-7.46 (t, 1H, J=7.9 Hz), 7.12-7.09 (d, 1H, J=8.7 Hz), 6.99-6.92 (m, 2H), 6.86-6.83 (m, 2H), 6.76 (s, 4H), 6.63-6.60 (dd, 1H, J=2.1 Hz, J=6.5 Hz), 5.14 (s, 2H), 3.96-3.92 (t, 2H, J=5.9 Hz), 3.70 (s, 3H), 2.59-2.55 (t, 2H, J=5.9 Hz), 2.37 (s, 4H), 2.14 (s, 3H), 1.49-1.44 (m, 4H), 1.35-1.34 (m, 2H); IR 3400, 2950, 1600 cm⁻¹; MS eI m/z 471 (M+); CHN calcd for C₃₀H₃₄N₂O₃.

Example No. 132 3-Methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-2-(4-trifluoromethoxy-phenyl)-1H-indole-5-ol

Mp=122-125° C.; ¹H NMR (DMSO) 8.80 (s, 1H), 7.51-7.45 (m, 4H), 7.17-7.14 (d, 1H, J=8.7 Hz), 6.85-6.84 (d, 1H, J=2.0 Hz), 6.75-6.69 (m, 4H), 6.66-6.62 (m, 1H), 5.14 (s, 2H), 3.95-3.92 (t, 2H, J=5.8 Hz), 2.59-2.55 (t, 2H, J=5.6 Hz), 2.49-2.38 (m, 4H), 2.13 (s, 3H), 1.47-1.44 (m, 4H), 1.36-1.34 (d, 2H, J=4.8 Hz); IR 3400, 2900, 1600 cm⁻¹; MS eI m/z 525 (M+); CHN calcd for C₃₀H₃₁F₃N₂O₃+0.25H₂O.

Synthetic Procedures and Physical Data for Compounds Substituted with Chloro, Ethyl or Cyano Groups at the 3-Position of the Indole

TABLE 8

Example No. X Q Z No. 133 Cl H

No. 134 Cl H

No. 135 Cl H

No. 136 Cl CH₃

No. 137 Et H

No. 138 CN H

No. 139 CN H

Synthesis of 3-Chloro Analogues No. 133-No. 136 Scheme 14 Synthesis of 3-chloroindole

Example No. 140 Formation of hydrazone

4-Benzyloxyphenylhydrazine CAS No. [51145-58-5](50.0 g, 233.4 mmol) was mixed with 4-benzyloxyacetophenone CAS No. [54696-05-8](63.0 g, 280.0 mmol) in pure ethanol (800 mL). A catalytic amount of acetic acid (5 drops) was added. The reaction was heated to reflux for 2.5 hrs. During the course of refluxing, the condensed product solidified out of the hot solution. The reaction was cooled down to rt. The desired product was collected by vacuum filtration as a light yellow solid (85 g, 86%). Mp=165-174° C.; ¹H NMR (DMSO) 8.91 (s, 1H), 7.68 (d, 2H, J=8.8 Hz), 7.48-7.32 (m, 10H), 7.12 (d, 2H, J=9 Hz), 7.00 (d, 2H, J=8.8 Hz), 6.88 (d, 2H, J=9.0 Hz). 5.11 (s, 2H), 5.01 (s, 2H), 2.17 (s, 3H); MS eI m/z 422 (M+).

Example No. 141 Formation of indole from hydrazone: 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1H-indole

A flask was charged with N-(4-Benzyloxy-phenyl)-N′-[1-(4-benzyloxy-phenyl)-ethylidene]-hydrazine (No. 140) (10.0 g, 23.7 mmol), ZnCl₂ (8.06 g, 59.17 mmol), acetic acid (70 mL). The reaction flask was heated to 105° C. for no more than 20 min. During the heating period, the reaction was monitored carefully by TLC for the disappearance of the starting material. The progress of the reaction could be shown as the product solidified out of the solution while heating. The reaction was then cooled to rt and more product crashed out was observed. The reaction content was poured into a separatory funnel containing ether (100 mL) and H₂O (200 mL), which was shaken vigorously. The insoluble residue as the desired product stayed in the ether layer which was collected by vacuum filtration. The product was further purified by trituration in ether to give a light gray solid (4.4 g, 46%)

Mp=202-204° C.; ¹H NMR (DMSO) 11.24 (s, 1H), 7.73 (d, 2H, J=8.8 Hz), 7.48-7.41 (m, 4H), 7.45-7.27 (m, 6H), 7.25 (d, 1H, J=8.6 Hz), 7.12-7.04 (m, 3H), 6.77 (dd, 1H, J=2.4 Hz, 8.6 Hz), 6.65 (d, 1H, J=1.5 Hz), 5.14 (s, 2H), 5.08 (s, 2H); IR 3420, 3000, 1625 cm⁻¹; MS eI m/z 405 (M+); CHN calcd for C₂₈H₂₃NO₂+0.40H₂O.

Example No. 142 Chlorination of indole to render 5-Benzyloxy-3-chloro-2-(4-benzyloxy-phenyl)-1H-indole

A flask was charged with 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1H-indole No. 141 (8.0 g, 20.0 mmole) and CH₂Cl₂ (50 ml). The reaction was cooled to 0° C. and n-chlorosuccinimide (2.9 g, 22 mmole) was added. The reaction was stirred at 0° C. for 20 min. The reaction was then washed with 10% sodium sulfite solution, dried over MgSO₄, and concentrated. To the resulting brown solid was added McOH and the mixture was stirred for 15 min. The solid was filtered to give 6.8 g of a tan solid (78%).

Mp=157-160° C.; ¹H NMR (DMSO) 11.5 (s, 1H), 7.80 (d, 2H, J=7.0 Hz), 7.42-7.28 (m, 11H), 7.17 (d, 2H, J=8.7 Hz), 7.01 (d, 1H, J=2.2 Hz), 6.88 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 5.17 (s, 2H), 5.13 (s, 2H); MS eI m/z 439 (M+).

Example No. 143 5-Benzyloxy-3-chloro-2-(2-methyl-4-benzyloxy-phenyl)-1H-indole

This indole synthesized analogously to indole No. 142 immediately preceding: Mp=¹H NMR (DMSO) 11.34 (s, 1H), 7.48-7.44 (m, 4H), 7.42-7.24 (m, 8H), 7.02 (dd, 2H, J=9.3 Hz, J=2.4 Hz), 6.95 (dd, 1H, J=8.4 Hz, J=2.6 Hz), 6.88 (dd, 1H, J=8.8 Hz, J=2.4 Hz), 5.16 (s, 2H), 5.14 (s, 2H), 2.23 (s, 3H); MS eI m/z 453 (M+).

Example No. 144 Alkylation of indole to give {4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-chloro-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

This procedure was performed analogously to that outlined for the synthesis of 3-methyl indole acetic acid ethyl esters outlined in method 3.

Mp=90-94° C.; ¹H NMR (DMSO) 7.45 (d, 4H, J=7.8 Hz), 7.41-7.26 (m, 9H), 7.14 (d, 2H, J=8.7 Hz), 7.04 (d, 1H, J=2.4 Hz), 6.91 (dd, 1H, J=9.0 Hz, J=2.5 Hz), 6.80-6.74 (m, 4H), 5.24 (s, 2H), 5.15 (s, 2H), 5.14 (s, 2H), 4.66 (s, 2H), 4.12 (q, 2H, J=7.2 Hz), 1.16 (t, 3H, J=7.5 Hz); MS eI m/z 631 (M+).

Example No. 145 Reduction of No. 144 to render No. 145 2-{4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-chloro-indol-1-ylmethyl]-phenoxy}-ethanol

This reaction was performed analogously to that outlined for the synthesis of 3-methyl indoles outlined in method 4. Compound was not purified or characterized, but used as obtained for the next step.

Example No. 146 Bromination of No. 145 to render Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(2-bromo-ethoxy)-benzyl]-3-chloro-1H-indole

This reaction was performed analogously to that outlined for the synthesis of 3-methyl indoles outlined in method 5. Mp=155-158° C.; ¹H NMR (DMSO) 7.45 (d, 4H, J=7.8 Hz), 7.41-7.25 (m, 9H), 7.14 (d, 2H, J=8.7 Hz), 7.04 (d, 1H, J=2.4 Hz), 6.91 (dd, 1H, J=9.0 Hz, J=2.5 Hz), 6.74 (s, 4H), 5.24 (s, 2H), 5.15 (s, 2H), 5.14 (s, 2H), 4.20 (t, 2H, J=5.3 Hz), 3.74 (t, 2H, J=5.3 Hz); MS eI m/z 651 (M+).

Example No. 147 Substitution of No. 146 with piperidine to render 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-chloro-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

This reaction performed analogously to that outlined for the synthesis of 3-methyl indoles outlined in method 6, using piperidine to substitute the bromide.

Mp 96-98° C.; ¹H NMR (DMSO) 7.45 (d, 4H, J=7.8 Hz), 7.40-7.30 (m, 9H), 7.14 (d, 2H, J=8.7 Hz), 7.04 (d, 1H, J=2.4 Hz), 6.91 (dd, 1H, J=9.0 Hz, J=2.5 Hz), 6.74 (s, 4H), 5.24 (s, 2H), 5.15 (s, 2H), 5.14 (s, 2H), 3.93 (t, 2H, J=6.0 Hz), 2.56 (t, 2H, J=6.0 Hz), 2.41-2.32 (m, 4H), 1.48-1.39 (m, 4H), 1.38-1.31 (m, 2H).

Example No. 148 5-benzyloxy-2-(4-benzyloxy-phenyl)-3-chloro-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Reaction performed the same as above except the substituting amine used was hexamethyleneamine.

Mp=94-97° C.; ¹H NMR (DMSO) 7.45 (d, 4H, J=7.8 Hz), 7.42-7.30 (m, 9H), 7.14 (d, 2H, J=8.7 Hz), 7.04 (d, 1H, J=2.4 Hz), 6.91 (dd, 1H, J=9.0 Hz, J=2.5 Hz), 6.74 (s, 4H), 5.24 (s, 2H), 5.15 (s, 2H), 5.14 (s, 2H), 3.93 (t, 2H, J=6.0 Hz), 2.75 (t, 2H, J=6.0 Hz), 2.63-2.59 (m, 4H), 1.58-1.44 (m, 8H); MS eI m/z 671 (M+).

Example No. 149 5-Benzyloxy-2-(2-methyl-4-benzyloxy-phenyl)-3-chloro-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Reactions to make this compound analogous to those used to make No. 147. Oil; ¹H NMR (DMSO) 7.50-7.29 (m, 11H), 7.17 (d, 1H, J=8.4 Hz), 7.05 (d, 1H, J=2.4 Hz), 7.02 (d, 1H, J=2.4 Hz), 6.93-6.85 (m, 2H), 6.75-6.65 (m, 4H), 5.14 (s, 2H), 5.13 (s, 2H), 5.07 (m, 2H), 3.92 (t, 2H, J=5.9 Hz), 2.55 (t, 2H, J=5.9 Hz), 2.42-2.29 (m, 4H), 1.94 (s, 3H), 1.44-1.40 (m, 4H), 1.38-1.34 (m, 2H).

Example No. 133 3-Chloro-2-(4-hydroxy-phenyl)-1-[4-(2-pyrrolidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (Hcl)

Synthesized as described for example No. 134.

Mp=233-235° C.; ¹H NMR (DMSO) 10.50 (s, 1H), 9.88 (s, 1H), 9.01 (s, 1H), 7.30-7.20 (m, 3H), 6.90-6.80 (m, 7H), 6.68 (dd, 1H, J=2.4, Hz, 8.8 Hz), 5.20 (s, 2H), 4.22 (t, 2H, J=4.8 Hz), 3.47 (t, 2H, J=4.8 Hz), 3.10 (bm, 4H), 1.90 (s, 4H); IR (KBr) 3400, 1625, 1475, 825 cm⁻¹; MS eI m/z 462 (M+); CHN calcd for C₂₇H₂ClN₂O₃+1HCl+0.75H₂O.

Example No. 134 Removal of benzyl ethers to render 3-Chloro-2-(4-hydroxy-phenyl)-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Benzyl ethers were removed analogously to that procedure outlined for 3-methyl indoles outlined in method 7. This compound was then converted to the hydrochloride salt as described previously in method 8; Mp=207-209° C.; ¹H NMR (DMSO) 10.10 (bs, 1H), 9.86 (s, 1H), 9.07 (s, 1H), 7.26 (d, 2H, J=8.6 Hz), 7.22 (d, 1H, J=8.8 Hz), 6.87 (d, 2H, J=8.6 Hz), 6.81-6.78 (m, 5H), 6.65 (dd, 1H, J=8.8 Hz, J=2.2 Hz), 5.20 (s, 2H), 4.27 (t, 2H, J=5.0 Hz), 3.44-3.37 (m, 4H), 3.00-2.85 (m, 2H), 1.81-1.60 (min, 5H), 1.41-1.26 (m, 1H); IR (KBr) 3350, 1470, 1250 CM-1; MS eI m/z 476 (M+); CHN calc for C₂₈H₂₉ClN₂O₃+HCL+1.5H₂O.

Example No. 135 3-Chloro-2-(4-hydroxy-phenyl)-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (Hcl)

Synthesized as described for No. 134.

Mp=196-198° C.; ¹H NMR (DMSO) 10.10 (brs, 1H), 9.86 (s, 1H), 9.07 (s, 1H), 7.26 (d, 2H, J=8.8 Hz), 7.22 (d, 1H, J=9.0 Hz), 6.87 (d, 2H, J=8.6 Hz), 6.84-6.78 (m, 5H), 6.65 (dd, 1H, J=8.8 Hz, J=2.2 Hz), 5.20 (s, 2H), 4.27 (t, 2H, J=5.0 Hz), 3.45-3.30 (m, 4H), 3.21-3.10 (m, 2H), 1.82-1.76 (m, 4H), 1.65-1.46 (m, 4H); MS eI m/z 491 (M+);

CHN calc for C₂₉H₃₁ClN₂O₃+1HCl+0.37H₂O; IR (KBr) 3400, 3200, 1450, 1125.

Example No. 136 3-Chloro-2-(4-hydroxy-2-methyl-phenyl)-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Synthesized as described for No. 134 except the compound was not converted into a salt.

Foam; ¹H NMR (DMSO) 9.64 (s, 1H), 9.01 (s, 1H), 7.25 (d, 1H, J=8.8 Hz), 7.03 (d, 1H, J=8.1 Hz), 6.79 (d, 1H, J=2.4 Hz), 6.78-6.65 (m, 7H), 5.06-4.92 (m, 2H), 3.94 (t, 2H, J=5.9 Hz), 2.62-2.57 (m, 2H), 2.42-2.32 (m, 4H), 1.90 (s, 3H), 1.48-1.40 (m, 4H), 1.40-1.32 (m, 2H); MS eI m/z 490 (M+); IR (KBr) 3430, 2900, 1450 cm⁻¹; CHN calc for C₉H₃₁ClN₂O₃+1.0H₂O.

Synthesis of 3-ethylindole analogue No. 137

This compound was synthesized in exact analogy to the example given for 3-methylindoles, supra, using methods a and 2-8. The only difference is that the starting material used is 4′-(benzyloxy)-Butyrophenone CAS No. [26945-71-1] instead of 4′-(benzyloxy)-Propiophenone. Data for intermediates is as follows.

Example No. 150 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-ethyl-1H-indole

Mp=101-108° C.; MS eI m/z 433 (M+).

Example No. 151 {4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-ethyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Mp=72-75° C.; MS eI m/z 625 (M+).

Example No. 152 2-{4-[5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-ethyl-indol-1-ylmethyl]-phenoxy}-ethanol

Mp=105-113° C.; MS eI m/z 583 (M+).

Example No. 153 Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(2-bromo-ethoxy)-benzyl]-3-ethyl-1H-indole

Mp=140° C. (decomp.); MS eI m/z 647, 645 (M+, Br present).

Example No. 154 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-ethyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Mp=92-96° C.; ¹H NMR (DMSO) 7.47 (d, 4H, J=7.2 Hz), 7.42-7.39 (m, 4H), 7.36-7.30 (m, 2H), 7.27 (d, 2H, J=8.6 Hz), 7.18 (d, 1H, J=8.8 Hz), 7.14 (d, 1H, J=2.4 Hz), 7.10 (d, 2H, J=8.8 Hz), 6.79 (dd, 1H, J=8.8 Hz, 2.2 Hz), 6.73 (s, 4H), 5.13 (s, 2H), 5.11 (s, 4H), 3.93 (t, 2H, J=5.9 Hz), 2.62-2.53 (m, 4H), 2.40-2.33 (m, 4H), 1.49-1.42 (m, 4H), 1.37-1.30 (m, 2H), 1.10 (t, 3H, J=7.2 Hz); MS eI m/z 650 (M+H+).

Example No. 137 2-(4-Hydroxy-phenyl)-3-ethyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol (HCl)

Mp=160-164° C.; ¹H NMR (DMSO) 9.78 (br s, 1H), 9.69 (s, 1H), 8.69 (s, 1H), 7.14 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.6 Hz), 6.87-6.78 (m, 7H), 6.56 (dd, 1H, J=8.8 Hz, 2.4 Hz), 5.08 (s, 2H), 4.25 (t, 2H, J=4.4 Hz), 3.45-3.38 (m, 5H), 3.00-2.86 (m, 2H), 2.57-2.50 (m, 2H), 1.83-1.59 (m, 5H), 1.41-1.28 (m, 1H), 1.10 (t, 2H, J=7.5 Hz); IR (KBr) 3400 br, 3200 br, 2920, 1610 cm⁻¹; MS eI m/z 470 (M+); CHN calcd for C₃₀H₃₄N₂O₃+HCl+1.5H₂O.

Scheme 15 Synthesis of 3-cyanoindole Analogues

Example No. 155 5-Benzyloxy-3-cyano-2-(4-benzyloxy-phenyl)-1H-indole

In a reaction flask 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1H-indole No. 141 (5.90 g, 14.6 mmol) was mixed with CH₂Cl₂ (90 mL) was cooled down to 0° C. (the starting material did not completely dissolve in CH₂Cl₂). While stirring vigorously, a solution of chlorosulfonyl isocyanate (2.26 g, 16.0 mmol) in CH₂Cl₂ (25 mL) was added dropwise over a period of 45 min. The reaction was run at 0° C. for 2 hrs while detected by TLC for the formation of the insoluble N-chlorosulfonylamide intermediate. After this period, Et₃N (1.47 g, 14.6 mL) in CH₂Cl₂ (25 mL) was added dropwise over 45 min at 0° C. The insoluble residue became soluble in the reaction solvent as the Et₃N addition was approaching completion. The reaction was let go for the additional 1 hr at 0° C. and 2 hrs at rt. The progress of the reaction could be observed by the insoluble solid formation of the product as the reaction time went on. The solvent was stripped down and the solid residue purified by trituration with methanol to yield (4.0 g, 63.8%). Mp=238-242° C.; ¹H NMR (DMSO) 12.31 (s, 1H), 7.88 (d, 2H, J=8.8 Hz), 7.48 (d, 4H, J=7.25 Hz), 7.55-7.30 (m, 7H), 7.23 (d, 2H, J=8.8 Hz), 7.14 (d, 1H, J=2.4 Hz), 6.97 (dd, 1H, J=2.2 Hz, 8.8 Hz), 5.20 (s, 2H), 5.17 (s, 2H); MS eI m/z 430 (M+).

Example No. 156 4-(2-Chloroethoxy)benzylbromide

To 4-(2-Chloroethoxy)benzylalcohol CAS No. [111728-87-1](6.4 g, 34.31 mmol) in dioxane (100 mL) at 0° C. was added slowly thionylbromide (7.13 g, 34.31 mmol). The reaction was run at 0° C. after 5 min. The reaction mixture was diluted with ether (200 mL) and washed with H₂O (1×30 mL) then NaHCO₃ (2×25 mL), and brine (30 mL). The organic extract was dried over MgSO₄ and concentrated. The crude product was purified by silica gel chromatography (15% EtOAc/Hex) to yield 5.0 g (58%) of the desired product. Mp=64-66° C.; ¹H NMR (DMSO) 7.37 (d, 2H, J=8.8 Hz), 6.93 (d, 2H, J=8.8 Hz), 4.68 (s, 2H), 4.24 (t, 2H, J=5.05 Hz), 3.93 (t, 2H, J=5.27 Hz); MS eI m/z 248 (M+).

Example No. 157 Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(2-chloro-ethoxy)-benzyl]-3-cyano-1H-indole

In a reaction flask the 3-cyano indole starting material No. 155 (2.86 g, 6.64 mmol) was dissolved in DMF (25 mL) at 0° C. was added NaH (191.2 mg, 8 mmol) slowly. The reaction was stirred at 0° C. for 20 min. In a separate reaction flask containing 4-(2-Chloroethoxy)benzylbromide No. 156 (1.81 g, 7.28 mmol) in DMF (15 mL) at 0° C., the above prepared indole anion solution taken up by syringe was added slowly. The reaction was stirred at 0° C. for 20 min and promoted to rt for 1 h. The reaction was quenched with a few drops of H₂O. The reaction mixture was partitioned between EtOAc (2×100 mL) and H₂O (80 mL). The organic extract was washed with brine (80 mL), dried over MgSO₄, and concentrated. The crude product was purified by trituration with ether to give the product as a white solid (2.80 g, 70.4%). Mp=160-162° C.; ¹H NMR (DMSO) 7.53-7.28 (m, 13H), 7.23 (m, 3H), 6.97 (dd, 1H, J=2.4 Hz, 9.0 Hz), 6.86-6.78 (m, 4H), 5.37 (s, 2H), 5.18 (s, 4H), 4.15 (t, 2H, J=4.8 Hz), 3.87 (t, 2H, J=5.3 Hz); MS eI m/z 598 (M+).

Example No.'s 158 and 159

Substitution of the chloro group with piperidine and hexamethyleneamine was performed analogously to the procedure outlined in method 6 using No. 157 as a starting material, supra.

Example No. 158 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-cyano-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Mp=148-150° C.; ¹H NMR (DMSO) 7.54-7.30 (m, 13H), 7.25-7.18 (m, 3H), 6.98 (dd, 1H, J=2.4 Hz, 9.0 Hz), 6.84-6.74 (m, 4H), 5.35 (s, 2H), 5.17 (s, 4H), 3.94 (t, 2H, 5.9 Hz), 2.55 (t, 2H, 5.7 Hz), 2.35 (bs, 4H), 1.50-1.40 (m, 4H), 1.38-1.25 (m, 2H); IR 3400, 2910, 2250, 1250 cm⁻¹; MS FAB 648 [M+H]+.

Example No. 159 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-cyano-1-[4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

¹H NMR (DMSO) 8.60 (br s, 1H), 7.60-7.28 (m, 12H), 7.25-7.16 (m, 3H), 6.97 (dd, 1H, J=2.4 Hz, 9.0 Hz), 6.88-6.75 (m, 4H), 5.35 (s, 2H), 5.17 (s, 4H), 3.92 (t, 2H, J=6.2 Hz), 3.08-3.00 (m, 2H), 2.77 (t, 2H, J=5.9 Hz), 2.63 (t, 4H, J=4.8 Hz), 1.78-1.68 (m, 2H), 1.60-1.40 (m, 4H); MS eI m/z 661 (M+).

Examples No. 138 and No. 139

Benzyl ethers were removed by hydrogen transfer using 1,4 cyclohexadiene and 10% Pd/C as described in method 7. Compounds were converted into their respective hydrochloride salts as described in method 8.

Example No. 138 5-Hydroxy-2-(4-Hydroxy-phenyl)-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole-3-carbonitrile (HCl)

Mp=173-175° C.; ¹H NMR (DMSO) 10.40 (s, 1H), 10.12 (s, 1H), 9.40 (s, 1H), 7.38 (m, 2H), 7.30 (d, 1H, J=8.8 Hz), 7.02-6.90 (m, 3H), 6.88 (s, 4H), 6.75 (dd, 1H, J=2.4 Hz, 9 Hz), 5.33 (s, 2H), 4.30 (t, 2H, J=4.8 Hz), 3.51-3.38 (m, 4H), 2.92 (m, 2H), 1.85-1.73 (m, 4H), 1.68-1.59 (m, 1H), 1.26-1.21 (m, 1H); IR 3400, 2200, 1250 cm⁻¹; MS eI m/z 467 (M+); CHN calcd for C₂₉H₂₉N₃O₃+1.0 HCl+1.0H₂O.

Example No. 139 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-5-hydroxy-2-(4-hydroxy-phenyl)-1H-indole-3-carbonitrile (HCl)

Mp=160-163° C.; ¹H NMR (DMSO) 10.22 (s, 1H), 10.08 (s, 1H), 9.35 (s, 1H), 7.40-7.37 (m, 2H), 7.30 (d, 1H, 8.8 Hz), 7.0-6.90 (m, 3H), 6.87 (s, 4H), 6.74 (dd, 1H, J=2.41 Hz, 9 Hz), 5.33 (s, 2H), 4.27 (t, 2H, J=5.0 Hz), 3.50-3.30 (m, 4H), 3.20 (m, 2H), 1.85-1.70 (m, 4H), 1.65-1.50 (m, 4H); IR 3300, 2200, 1250 cm⁻1; MS eI m/z 481 (M+); CHN calc for C₃₀H₃₁N₃O₃+1HCl+1H₂O.

Esters of Indole No.'s 97 and 98

TABLE 9

Example No. R Z No. 160 Et

No. 161 t-Bu

No. 162 t-Bu

Method 9 Example No. 162 Di-pivalate ester of 2-(4-Hydroxy-phenyl)-3-methyl-1-[4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indol-5-ol

Example No. 97 free base was used as the starting material for this synthesis. No. 97 (1.0 g, 2.5 mmol) in 20 mL CH₂Cl₂ was treated with diisopropylethylamine (0.7 g, 6.3 mmol) and cataltic DMAP. The reaction was cooled to 0° C. and treated with pivaloyl chloride (0.7 mL, 5.6 mmol) and allowed to come to rt and stirred overnight. The reaction was worked up by diluting with CH₂Cl₂ and washing with water and brine. After drying over MgSO₄ the solution was concentrated and chromatographed on silica gel (MeOH/CH₂Cl₂, 1:19) to yield the desired material as an orange foam (1.08 g). This material was then taken up in 15 mL ethyl acetate and treated with 2.5 mL of a 1M HCl/Et₂O solution. Hexane was added until the solution turned cloudy. The product precipitated out as the HCl salt. This material was recrystallized from ethyl acetate/hexane to yield 0.42 g of pure No. 162: Mp=182-185° C.; CHN calcd for C₃₉H₄₈N₂O₅+HCl+0.25H₂O.

Example No. 160 Di-propionate of 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol (HCl)

Compound was prepared analogously to example No. 162 except the starting material used was example No. 98 and the acylating agent used was propionyl chloride: Mp=170.5-172° C.; CHN calcd for C₃₆H₄₂N₂O₅+HCl+0.75H₂O; MS FAB 605 (M+Na)+.

Example No. 161 Di-pivalate of 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol (HCl)

Compound was prepared analogously to example No. 162 except the starting material used was example No. 98: Mp=143-151° C.; CHN calcd for C₄₀H₅₀N₂O₅+HCl+0.75H₂O.

Experimental for Example No. 166

Scheme 16 Synthesis of No. 166

Example No. 166 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[3-(piperidin-1-yl)-propoxy]-benzyl}-1H-indol-5-ol

The title compound was prepared according to Scheme 16 and the steps provided below:

Method 11 Example No. 163a 4-(3-chloropropoxy)-benzyl alcohol

A solution of 4-hydroxy benzyl alcohol CAS No. [623-05-2](10 g, 80.5 mmol) in ethanol (70 mL) was treated with 1,3 bromochloro propane (16.0 g, 100 mmol) and potassium hydroxide (5.0 g, 89 mmol) was refluxed for 2 hours. The solution was cooled and filtered and then the filtrate concentrated. The concentrate was taken up in ether and washed with water, brine and dried over magnesium sulfate. The material was chromatographed on silica gel using ethyl acetate/hexanes (3:7) to yield 11.6 g of the product as a white solid: Mp=65° C.; ¹H NMR (DMSO) 7.21 (d, 2H, J=8.8 Hz), 6.88 (d, 2H, J=8.8 Hz), 5.03 (t, 1H, J=5.7 Hz), 4.40 (d, 2H, J=5.5 Hz), 4.05 (t, 2H, J=6.1 Hz), 3.77 (t, 2H, J=6.4 Hz); MS eI m/z 200.

Method 12 Example No. 163b 4-(3-chloropropoxy)-benzyl bromide

A solution consisting of 4-(3-chloropropoxy)-benzyl alcohol No. 162 (10.6 g, 52.8 mmol) in dioxane (0.125 l) was cooled to 0° C. and treated with a dropwise addition of thionyl bromide (12.0 g, 58.0 mmol). After 10 minutes the reaction was complete. The dioxane was diluted with ethyl ether and washed with water, brine, and then dried over MgSO₄. The material was concentrated down to yield 15 g of an oil: ¹H NMR (DMSO) 7.36 (d, 2H, J=8.8 Hz), 6.92 (d, 2H, J=8.6 Hz), 4.68 (s, 2H), 4.08 (t, 2H, J=5.9 Hz), 3.77 (t, 2H, J=6.4 Hz); MS (FAB) 266 (M+H⁺).

Method 13 Example No. 164 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(3-chloro-propoxy)-benzyl]-3-methyl-1H-indole

A solution consisting of 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1H-indole No. 7 (6.5 g, 15.5 mmol) in DMF (60 mL) was cooled to 0° C. and treated with addition of sodium hydride (0.68 g, 17.0 mmol) and stirred for 20 minutes. A solution of 4-(3-chloropropoxy)-benzyl bromide No. 163 in DMF (10 mL) was then added slowly. The reaction was allowed to come to rt and stirred for 2 hours. The reaction was poured into water and extracted with ethyl acetate. The ethyl acetate was washed with water, brine and dried over magnesium sulfate and concentrated. The concentrate was treated with methanol and 5 g of the desired product precipitated as a white solid with a melting point of 130-132° C.

Method 14 Example No. 165 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(3-piperidin-1-yl-propoxy)-benzyl]-3-methyl-1H-indole

A solution of 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(3-chloro-propoxy)-benzyl]-3-methyl-1H-indole No. 164 (3 g, 5.1 mmol), potassium iodide (2.5 g, 15.3 mmol) and piperidine (3.0 mL, 30.6 mmol) were heated in DMF (30 mL) at 100° C. for 18 hours. The reaction was worked up by pouring into water and extracting with ethyl acetate. The organic layer was washed with water, brine and dried over magnesium sulfate. The solution was concentrated to an oil and the product precipitated out by adding methanol. The product was obtained as a white solid: Mp=104-106° C.; ¹H NMR (DMSO) 7.47 (d, 4H, J=7.5 Hz), 7.38 (q, 4H, J=7.9 Hz), 7.36-7.30 (m, 1H), 7.28 (d, 2H, J=8.3 Hz), 7.19 (d, 1H, J=8.8 Hz), 7.12-7.10 (m, 4H), 6.80 (dd, 1H, J=8.8, 2.0 Hz), 6.72 (s, 4H), 5.14 (s, 2H), 5.13 (s, 2H), 5.11 (s, 2H), 3.86 (t, 2H, J=6.4 Hz), 2.35-2.20 (m, 6H), 2.14 (s, 3H), 1.78-1.75 (m, 2H), 1.47-1.42 (m, 4H), 1.40-1.31 (m, 2H); MS eI m/z 650.

Method 15 Example No. 166 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[3-(piperidin-1-yl)-propoxy]-benzyl}-1H-indol-5-ol

A solution of 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(3-piperidin-1-yl-propoxy)-benzyl]-3-methyl-1H-indole No. 165 (2.35 g) in tetrahydrofuran (25 mL) and ethanol (25 mL) was added to 2.3 g of 10% palladium on carbon. Cyclohexadiene (10 mL) was added and the reaction allowed to stir at room temperature for 18 hours. The catalyst was filtered through celite and the reaction mixture was concentrated and chromatographed on silica gel using dichloromethane/methanol (4:1) to elute the product (0.8 g) as a white foam: Mp=125-130° C.; ¹H NMR 9.68 (s, 1H), 8.70 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.85 (d, 2H, J=8.6 Hz), 6.80 (d, 1H, J=2.4 Hz), 6.74 (d, 4H, J=2.6 Hz), 6.57 (dd, 1H, J=8.6, 2.2 Hz), 5.09 (s, 2H), 3.88 (t, 2H, J=6.4 Hz), 3.60-3.15 (m, 2H), 2.62-2.38 (m, 4H), 2.09 (s, 3H), 1.92-1.78 (m, 2H), 1.55-1.43 (m, 4H), 1.42-1.30 (m, 2H); IR (KBr) 3400 (br), 2900, 1620, 1515 cm⁻¹; MS eI m/z 470.

Synthesis of No. 167 and No. 168

TABLE 10

Example No. Z No. 167

No. 168

Scheme 17 Synthetic Scheme for Examples No. 167 and No. 168

Synthesis of Example No. 167 2-(4-Hydroxy-phenyl)-1-[3-methoxy-4-(2-piperidin-1-yl-ethoxy)-benzyl]-3-methyl-1H-indol-5-ol Example No. 169 (4-Formyl-2-methoxy-phenoxy)-acetic acid ethyl ester

A flask containing vanillin (20 g, 0.13 mol), ethyl bromoacetate (28.4 g, 0.17 mol) and potassium carbonate (32.7 g, 0.24 mol) and acetone 200 mL were heated to reflux for 3 hours. The reaction was allowed to come to rt. The acetone was stripped off and the residue partitioned between water and ethyl acetate. The ethyl acetate was washed with brine and dried over magnesium sulfate. The organic layer was concentrated and the solid triturated with hexanes to yield 28.4 grams of example No. 169.

Mp=56-59° C.; ¹H NMR (DMSO) 9.83 (s, 1H), 7.50 (dd, 1H, J=2.0 Hz, 8.3 Hz), 7.42 (d, 1H, J=1.7 Hz), 7.07 (d, 1H, J=8.4 Hz), 4.91 (s, 2H), 4.16 (q, 2H, J=7.2 Hz), 3.84 (s, 3H), 1.20 (t, 3H, J=7.1 Hz); MS eI m/z 238 (M+); CHN calcd for C₁₂H₁₄O₅.

Example No. 170 (4-Chloromethyl-2-methoxy-phenoxy)-acetic acid ethyl ester

A solution of example No. 169 (28.8 g, 0.119 mol) in 600 mL of EtOH/THF(1:1) was treated with sodium borohydride (2.25 g, 0.06 mol) at 0° C. and stirred for 45 minutes. The solvents were evaporated and the reaction mixture diluted with ethyl acetate and washed with 1N HCl solution. The product thus obtained (14.2 g, 0.059 mol) as an oil was dissolved in 140 mL of THF and cooled to 0° C. This solution was then treated with dropwise addition of thionyl chloride (7.38 g, 0.062 mol) at)° C. After 1 hour the reaction was poured into 400 mL of water and extracted with ether. The ether layer was washed with a sodium bicarbonate solution and dried over magnesium sulfate. This was concentrated and chromatographed by silica gel chromatography using ethyl acetate/hexanes (1:9). The product was obtained as 10.5 g of a white solid. Mp=64-66° C.; ¹H NMR (DMSO) 7.06 (d, 1H, J=2.0 Hz), 6.91 (dd, 1H, J=2.0 Hz, 2.2 Hz), 6.83 (d, 1H, J=2.1 Hz), 4.75 (s, 2H), 4.70 (s, 2H), 4.13 (q, 2H, J=7.2 Hz), 3.77 (s, 3H), 1.19 (t, 3H, J=7.1 Hz); MS eI m/z 258 (M+); CHN calcd for C₁₂H₁₅ClO₄.

Example No. 171 {2-Methoxy-4-[5-benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-acetic acid ethyl ester

Alkylation of the indole No. 7 was performed as described previously in Method No. 3 using example No. 170 as the electrophile.

Mp=120-123° C.; ¹H NMR (DMSO) 7.48-7.20 (m, 13H), 7.18-7.10 (m, 3H), 6.80 (dd, 1H, J=2.5 Hz, 8.8 Hz), 6.64 (d, 1H, J=8.4 Hz), 6.52 (d, 1H, J=2.0 Hz), 6.24 (dd, 1H, J=1.9 Hz, 8.1 Hz), 5.13 (s, 4H), 5.10 (s, 2H), 4.61 (s, 2H), 4.10 (q, 2H, J=7.0 Hz), 3.58 (s, 3H), 2.15 (s, 3H), 1.15 (t, 3H, J=7.0 Hz); MS eI m/z 641 (M+).

Example No. 172 2-{2-Methoxy-4-[5-benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-indol-1-ylmethyl]-phenoxy}-ethanol

Reduction of the ester No. 171 was performed as described previously in Method 4.

Mp=86-90° C.; ¹H NMR (DMSO) 7.48-7.20 (m, 13H), 7.18-7.10 (m, 3H), 6.80 (dd, 1H, J=2.5 Hz, 8.8 Hz), 6.64 (d, 1H, J=8.4 Hz), 6.52 (d, 1H, J=2.0 Hz), 6.24 (dd, 1H, J=1.9 Hz, 8.1 Hz), 5.13 (s, 4H), 5.10 (s, 2H), 4.76 (t, 1H, J=5.5 Hz), 3.83 (t, 2H, J=5.1 Hz), 3.63 (q, 2H, J=5.3 Hz), 3.56 (s, 3H), 2.15 (s, 3H); MS eI m/z 599 (M+).

Example No. 173 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[3-methoxy-4-(2-bromo-ethoxy)-benzyl]-3-methyl-1H-indole

Conversion of the alcohol of example No. 172 to the bromide was performed analogously to that described in Method 5.

Mp=150-152° C.; ¹H NMR (DMSO) 7.48-7.20 (m, 13H), 7.18-7.10 (m, 3H), 6.80 (dd, 1H, J=2.5 Hz, 8.8 Hz), 6.64 (d, 1H, J=8.4 Hz), 6.52 (d, 1H, J=2.0 Hz), 6.24 (dd, 1H, J=1.9 Hz, 8.1 Hz), 5.13 (s, 4H), 5.10 (s, 2H), 4.15 (t, 2H, J=5.3 Hz), 3.70 (t, 2H, J=5.7 Hz), 3.58 (s, 3H), 2.15 (s, 3H); MS eI m/z 661 (M+).

Example No. 174 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[3-Methoxy-4-(2-piperidin-1-yl-ethoxy)-benzyl]-1H-indole

Substitution of the bromide with piperidine was performed as described previously in Method 6.

¹H NMR (DMSO) 7.48-7.20 (m, 13H), 7.18-7.10 (m, 3H), 6.80 (dd, 1H, J=2.5 Hz, 8.8 Hz), 6.64 (d, 1H, J=8.4 Hz), 6.52 (d, 1H, J=2.0 Hz), 6.24 (dd, 1H, J=1.9 Hz, 8.1 Hz), 5.13 (s, 4H), 5.10 (s, 2H), 3.90 (t, 2H, J=5.7 Hz), 3.55 (s, 3H), 2.62-2.50 (bs, 2H), 2.45-2.30 (bs, 4H), 2.15 (s, 3H), 1.50-1.40 (m, 4H), 1.40-1.35 (m, 2H); MS FAB m/z 667 (M+H+).

Example No. 175 5-Benzyloxy-2-(4-benzyloxy-phenyl)-3-methyl-1-[2-Methoxy-4-(2-azepan-1-yl-ethoxy)-benzyl]-1H-indole

Reaction performed exactly as for No. 174 except hexamethyleneamine was used to displace the bromide in place of piperidine.

Foam; ¹H NMR (DMSO) 7.48-7.20 (m, 13H), 7.18-7.10 (m, 3H), 6.80 (dd, 1H, J=2.5 Hz, 8.8 Hz), 6.64 (d, 1H, J=8.4 Hz), 6.52 (d, 1H, J=2.0 Hz), 6.24 (dd, 1H, J=1.9 Hz, 8.1 Hz), 5.13 (s, 4H), 5.10 (s, 2H), 3.90 (t, 2H, J=5.7 Hz), 3.55 (s, 3H), 2.85-2.70 (bs, 2H), 2.70-2.55 (s, 4H), 2.10 (s, 3H), 1.60-1.15 (m, 8H); MS FAB m/z 681 (M+H+)

Example No. 167 2-(4-Hydroxy-phenyl)-1-[3-methoxy-4-(2-piperidin-1-yl-ethoxy)-benzyl]-3-methyl-1H-indol-5-ol

Compound No. 173 was hydrogenated by transfer hydrogenation as described previously in Method 7. Compound was isolated as the hydrochloride salt by dissolving in ether and treating with 1.2 equivalents of 1N ether/HCl solution (this is a variation of method 8).

Mp=123-127° C.; ¹H NMR (DMSO) 10.20 (bs, 1H), 9.72 (s, 1H), 8.71 (s, 1H), 7.17 (d, 2H, J=8.6 Hz), 7.11 (d, 1H, J=8.8 Hz), 6.87 (d, 2H, J=8.6 Hz), 6.79 (m, 2H), 6.57 (dd, 1H, J=2.4 Hz, 8.8 Hz), 6.55 (d, 1H, J=1.7 Hz), 6.33 (dd, 1H, J=1.7 Hz, 8.1 Hz), 5.11 (s, 2H), 4.23 (t, 2H, J=4.8 Hz), 3.60 (s, 3H), 3.45 (m, 2H), 3.35 (m, 2H), 2.95 (m, 2H), 2.10 (s, 3H), 1.70 (m, 5H), 1.35 (m, 1H); IR 3500, 1500, 1275 cm⁻¹; MS (+) FAB m/z 487 (M+H)⁺; CHN calcd for C₃₀H₃₄N₂O₄+1HCl+1.0H₂O.

Example No. 168 2-(4-Hydroxy-phenyl)-1-[3-methoxy-4-(2-azepan-1-yl-ethoxy)-benzyl]-3-methyl-1H-indol-5-ol

Prepared in the same way as that described for example No. 167.

Mp=142-146° C.; ¹H NMR (DMSO) 10.36 (s, 1H), 9.72 (s, 1H), 8.71 (s, 1H), 7.18 (d, 2H, J=8.3 Hz), 7.11 (d, 1H, J=8.6 Hz), 6.87 (d, 2H, J=8.3 Hz), 6.82 (d, 1H, J=8.1 Hz), 6.79 (d, 1H, J=2.2 Hz), 6.57 (dd, 1H, J=2.2 Hz, 8.6 Hz), 6.55 (d, 1H, J=1.8 Hz), 6.33 (dd, 1H, J=1.5 Hz, 8.1 Hz), 5.11 (s, 2H), 4.24 (t, 2H, J=4.6 Hz), 3.60 (s, 3H), 3.40 (m, 4H), 3.20 (m, 2H), 2.10 (s, 3H), 1.75 (m, 4H), 1.55 (m, 4H); IR (KBr) 3300, 1500, 1270, 1200 cm⁻¹; MS (+) FAB m/z 501 (M+H)⁺; CHN calcd for C₃₁H₃₆N₂O₄+1.0 HCl+0.12CH₃OH.

Biological Data Method 16 In Vitro Estrogen Receptor Binding Assay

Receptor Preparation

CHO cells overexpressing the estrogen receptor were grown in 150 mm² dishes in DMEM+10% dextran coated charcoal, stripped fetal bovine serum. The plates were washed twice with PBS and once with 10 mM Tris-HCl, pH 7.4, 1 mM EDTA. Cells were harvested by scraping the surface and then the cell suspension was placed on ice. Cells were disrupted with a hand-held motorized tissue grinder using two, 10-second bursts. The crude preparation was centrifuged at 12,000 g for 20 minutes followed by a 60 minute spin at 100,000 g to produce a ribosome free cytosol. The cytosol was then frozen and stored at −80° C. Protein concentration of the cytosol was estimated using the BCA assay with reference standard protein.

Binding Assay Conditions

The competition assay was performed in a 96-well plate (polystyrene*) which binds <2.0% of the total input [³H]-17β-estradiol and each data point was gathered in triplicate. 100 uG/100 uL of the receptor preparation was aliquoted per well. A saturating dose of 2.5 nM [³H]17β-estradiol+competitor (or buffer) in a 50 uL volume was added in the preliminary competition when 100× and 500× competitor were evaluated, only 0.8 nM [³H]17β-estradiol was used. The plate was incubated at room temperature for 2.5 h. At the end of this incubation period 150 uL of ice-cold dextran coated charcoal (5% activated charcoal coated with 0.05% 69K dextran) was added to each well and the plate was immediately centrifuged at 99 g for 5 minutes at 4° C. 200 uL of the supernatant solution was then removed for scintillation counting. Samples were counted to 2% or 10 minutes, whichever occurs first. Because polystyrene absorbs a small amount of [³H]17β-estradiol, wells containing radioactivity and cytosol, but not processed with charcoal were included to quantitate amounts of available isotope. Also, wells containing radioactivity but no cytosol were processed with charcoal to estimate unremovable DPM of [³H]17β-estradiol. Corning No. 25880-96, 96-well plates were used because they have proven to bind the least amount of estradiol.

Analysis of Results

Counts per minute (CPM) of radioactivity were automatically converted to disintegrated per minute (DPM) by the Beckman LS 7500 Scintillation Counter using a set of quenched standards to generate a H No. for each sample. To calculate the % of estradiol binding in the presence of 100 or fold 500 fold competitor the following formula was applied: ((DPM sample−DPM not removed by charcoal/(DPM estradiol−DPM not removed by charcoal))×100%=% of estradiol binding

For the generation of IC₅₀ curves, % binding is plotted vs compound. IC₅₀'s are generated for compounds that show >30% competition at 500× competitor concentration. For a description of these methods, see Hulme, E. C., ed. 1992. Receptor-Ligand Interactions: A Practical Approach. IRL Press, New York. (see especially chapter 8).

TABLE 11 Estrogen Receptor Binding

Ex- Receptor ample Binding No. X Q Z IC50's uM No. 85 H H

0.45 No. 86 H 4′-OH

0.12 No. 87 OH H

0.030 No. 88 OMe 4′-OH

0.35 No. 89 OH 4′-OMe

0.30 No. 90 OMe 4′-OMe

0.60 No. 91 OMe 4′-OMe

0.52 No. 92 OH 4′-OEt

0.062 No. 93 OH 4′-OEt

0.090 No. 94 F 4′-OH

0.20 No. 97 OH 4′-OH

0.060 No. 98 OH 4′-OH

0.050 No. 99 OH 4′-OH

0.03 No. 100 OH 4′-OH

0.06 No. 101 OH 4′-OH

0.04 No. 102 OH 4′-OH

0.08 No. 103 OH 4′-OH

0.2 No. 104 OH 4′-OH

0.1 No. 105 OH 4′-OH

0.028 No. 106 OH 4′-OH

0.1 No. 107 OH 4′-OH

0.06 No. 108 OH 4′-OH

0.02 No. 109 OH 4′-OH

0.17 No. 110 OH 4′-OH

0.037 No. 111 OH 4′-OH

0.15 No. 112 OH 4′-OH

0.07 No. 113 OH 4′-OH

0.047 No. 114 OH 4′-OH

0.001 No. 115 OH 4′-OH

0.15 No. 116 OH 4′-Fl

0.04 No. 117 OH 4′-Fl

0.10 No. 118 OH 3′-OMe, 4′-OH

N/A No. 119 OH 3′,4′-OCH₂O—

0.070 No. 120 OH 4′-O—iPr

0.10 No. 121 OH 4′-O—iPr

0.080 No. 122 OH 4′-O-Cp

0.080 No. 123 OH 4′-CF₃

0.17 No. 124 OH 4′-CH₃

0.11 No. 125 OH 4′-Cl

0.11 No. 126 OH 2′,4′,-Dimethoxy

N/A No. 127 OH 3′-OH

0.019 No. 128 OH 3′-OH

0.009 No. 129 OH 4′-OH, 3′-Fl

0.0055 No. 130 OH 4′-OH, 3′-Fl

0.013 No. 131 OH 3′-OMe

0.12 No. 132 OH 4′-OCF₃

0.05

TABLE 12 Estrogen Receptor Binding

Example Receptor Binding No. X Q Z IC50's uM No. 133 Cl H

0.004 No. 134 Cl H

0.024 No. 135 Cl H

0.029 No. 136 Cl CH₃

0.013 No. 137 Et H

0.15 No. 138 CN H

0.011 No. 139 CN H

0.023

TABLE 13 Estrogen Receptor Binding

Example Receptor Binding No. R Z IC50's uM No. 160 Et

N/A No. 161 t-Bu

N/A No. 162 t-Bu

Does not Bind

TABLE 14 Estrogen Receptor Binding

Example Receptor Binding No. X Q Z IC50's uM No. 166 OH 4′-OH

0.099

TABLE 15 Estrogen Receptor Binding

Example Receptor Binding No. Z IC50's uM No. 167

0.08 No. 168

0.057

Method 17 Ishikawa Cell Alkaline Phosphatase Assay

Cell Maintenance and Treatment:

Ishikawa cells were maintained in DMEM/F12 (50%:50%) containing phenol red+10% fetal bovine serum and the medium was supplemented with 2 mM Glutamax, 1% Pen/Strap and 1 mM sodium pyruvate. Five days prior to the beginning of each experiment (treatment of cells) the medium was changed to phenol red-free DMEM/F12+10% dextran coated charcoal stripped serum. On the day before treatment, cells were harvested using 0.5% trypsin/EDTA and plated at a density of 5×10⁴ cells/well in 96-well tissue culture plates. Test compounds were dosed at 10⁻⁶, 10⁻⁷ and 10⁻⁸M in addition to 10⁻⁶ M (compound)+10⁻⁹ M 17β-estradiol to evaluate the ability of the compounds to function as antiestrogens. Cells were treated for 48 h prior to assay. Each 96-well plate contained a 17β-estradiol control. Sample population for at each dose was n=8.

Alkaline Phosphatase Assay:

At the end of 48 h the media is aspirated and cells are washed three times with phosphate buffered saline (PBS). 50 μL of lysis buffer (0.1 M Tris-HCl, pH 9.8, 0.2% Triton X-100) is added to each well. Plates are placed at −80° C. for a minimum of minutes. Plates are thawed at 37° C. followed by the addition of 150 μL of 0.1 M Tris-HCl, pH 9.8, containing 4 mM para-nitrophenylphosphate (pNPP) to each well (final concentration, 3 mM pNPP).

Absorbance and slope calculations were made using the KineticCalc Application program (Bio-Tek Instruments, Inc., Winooski, Vt.). Results are expressed as the mean+/−S.D. of the rate of enzyme reaction (slope) averaged over the linear portion of the kinetic reaction curve (optical density readings every 5 minutes for 30 minutes absorbance reading). Results for compounds are summarized as percent of response related to 1 nM 17β-estradiol.

Various compounds were assayed for estrogenic activity by the alkaline phosphatase method and corresponding ED50 values (95% C.I.) were calculated. The four listed in the following were used as reference standards:

17β-estradiol 0.03 nM 17α-estradiol 1.42 nM estriol 0.13 nM estrone 0.36 nM

A description of these methods is described by Holinka, C. F., Hata, H., Kuramoto, H. and Gurpide, E. (1986) Effects of steroid hormones and antisteroids on alkaline phosphatase activity in human endometrial cancer cells (Ishikawa Line). Cancer Research, 46:2771-2774, and by Littlefield, B. A., Gurpide, E., Markiewicz, L., McKinley, B. and Hochberg, R. B. (1990) A simple and sensitive microtiter plate estrogen bioassay based on stimulation alkaline phosphatase in Ishikawa cells; Estrogen action of D5 adrenal steroids. Endocrinology, 6:2757-2762.

Ishikawa Alkaline Phosphatase Assay

Compound % Activation 17β-estradiol 100% activity tamoxifen  0% activity (45% with 1 nM 17β-estradiol) raloxifene  5% activity (5% with 1 nM 17β-estradiol) Example No. 98  1% activity (1% with 1 nM 17β-estradiol)

Method No. 18 2×VIT ERE Infection Assay

Cell Maintenance and Treatment

Chinese Hamster Ovary cells (CHO) which had been stably transfected with the human estrogen receptor were maintained in DMEM+10% fetal bovine serum (FBS). 48 h prior to treatment the growth medium was replaced with DMEM lacking phenol red+10% dextran coated charcoal stripped FBS (treatment medium). Cells were plated at a density of 5000 cells/well in 96-well plates containing 200 μL of medium/well.

Calcium Phoshate Transfection

Reporter DNA (Promega plasmid pGL2 containing two tandem copies of the vitellogenin ERE in front of the minimal thymidine kinase promoter driving the luciferase gene) was combined with the B-galactosidase expression plasmid pCH110 (Pharmacia) and carrier DNA (pTZ18U) in the following ratio:

10 uG of reporter DNA

5 uG of pCH110DNA

5 uG of pTZ18U

20 uG of DNA/1 mL of transfection solution

The DNA (20 uG) was dissolved in 500 uL of 250 mM sterile CaCl₂ and added dropwise to 500 uL of 2×HeBS (0.28 M NaCl, 50 mM HEPES, 1.5 mM Na₂HPO₄, pH 7.05) and incubated at room temperature for 20 minutes. 20 uL of this mixture was added to each well of cells and remained on the cells for 16 h. At the end of this incubation the precipitate was removed, the cells were washed with media, fresh treatment media was replaced and the cells were treated with either vehicle, 1 nM 17β-estradiol, 1 uM compound or 1 uM compound+1 nM 17β-estradiol (tests for estrogen antagonism). Each treatment condition was performed on 8 wells (n=8) which were incubated for 24 h prior to the luciferase assay.

Luciferase Assay

After 24 h exposure to compounds, the media was removed and each well washed with 2× with 125 uL of PBS lacking Mg⁺⁺ and Ca⁺⁺. After removing the PBS, 25 uL of Promega lysis buffer was added to each well and allowed to stand at room temperature for 15 min, followed by 15 min at −80° C. and 15 min at 37° C. 20 uL of lysate was transferred to an opaque 96 well plate for luciferase activity evaluation and the remaining lysate (5 uL) was used for the B-galactosidase activity evaluation (normalize transfection). The luciferan substrate (Promega) was added in 100 uL aliquots to each well automatically by the luminometer and the light produced (relative light units) was read 10 seconds after addition.

Infection Luciferase Assay (Standards)

Compound % Activation 17β-estradiol 100% activity estriol  38% activity tamoxifen  0% activity (10% with 1 nM 17β-estradiol) raloxifene  0% activity (0% with 1 nM 17β-estradiol) B-Galactosidase Assay

To the remaining 5 uL of lysate 45 uL of PBS was added. Then 50 uL of Promega B-galactosidase 2× assay buffer was added, mixed well and incubated at 37° C. for 1 hour. A plate containing a standard curve (0.1 to 1.5 milliunits in triplicate) was set up for each experimental run. The plates were analyzed on a Molecular Devices spectrophotometric plate reader at 410 nm. The optical densities for the unknown were converted to milliunits of activity by mathematical extrapolation from the standard curve.

Analysis of Results

The luciferase data was generated as relative light units (RLUs) accumulated during a 10 second measurement and automatically transferred to a JMP (SAS Inc) file where background RLUs were subtracted. The B-galactosidase values were automatically imported into the file and these values were divided into the RLUs to normalize the data. The mean and standard deviations were determined from a n=8 for each treatment. Compounds activity was compared to 17β-estradiol for each plate. Percentage of activity as compared to 17β-estradiol was calculated using the formula %=((Estradiol-control)/(compound value))×100. These techniques are described by Tzukerman, M. T., Esty, A., Santiso-Mere, D., Danielian, P., Parker, M. G., Stein, R. B., Pike, J. W. and McDonnel, D. P. (1994). Human estrogen receptor transactivational capacity was determined by both cellular and promoter context and mediated by two functionally distinct intramolecular regions (see Molecular Endocrinology, 8:21-30).

TABLE 16 Infection Luciferase Activity Example No. 1 uM 1 uM + 17β estradiol No. 85 −2 43 No. 86 −5 2 No. 87 0 0 No. 88 4 44 No. 89 16 18 No. 90 3 58 No. 91 −3 56 No. 92 −4 −2 No. 93 −3 −2 No. 94 −5 15 No. 95 −4 −4 No. 96 12 8 No. 97 −4 −5 No. 98 5 5 No. 99 5 6 No. 100 9 10 No. 101 14 9 No. 102 9 10 No. 103 13 10 No. 104 7 7 No. 105 5 5 No. 106 10 81 No. 107 −1 54 No. 108 11 10 No. 109 6 5 No. 110 8 10 No. 111 25 23 No. 112 10 10 No. 113 14 16 No. 114 1 −1 No. 115 11 10 No. 116 −1 1 No. 117 0 1 No. 118 N/A N/A No. 119 −1 −1 No. 120 −1 1 No. 121 0 1 No. 122 1 5 No. 123 −1 1 No. 124 −2 −2 No. 125 −3 −2 No. 126 −1 0 No. 127 −3 −4 No. 132 −5 −2 No. 133 7 9 No. 134 9 5 No. 135 7 3 No. 136 16 10 No. 137 6 8 No. 138 −2 −1 No. 139 −12 −13 No. 160 N/A N/A No. 161 N/A N/A No. 162 −14 −13 No. 166 25 23 No. 167 4 10 No. 168 3 7

Method No. 19 Rat Uterotrophic/Antiuterotrophic Bioassay

The estrogenic and antiestrogenic properties of the compounds were determined in an immature rat uterotrophic assay (4 day) that (as described previously by L. J. Black and R. L. Goode, Life Sciences, 26, 1453 (1980)). Immature Sprague-Dawley rats (female, 18 days old) were tested in groups of six. The animals were treated by daily ip injection with 10 uG compound, 100 uG compound, (100 uG compound+1 uG 17β-estradiol) to check antiestrogenicity, and 1 uG 17β-estradiol, with 50% DMSO/50% saline as the injection vehicle. On day 4 the animals were sacrificed by CO₂ asphyxiation and their uteri were removed and stripped of excess lipid, any fluid removed and the wet weight determined. A small section of one horn was submitted for histology and the remainder used to isolate total RNA in order to evaluate complement component 3 gene expression.

TABLE 17 3 Day Rat Immature Uterine Assay Uterine wt mg Uterine wt Uterine wt 100 uG cmpd + mg Uterine wt mg 1uG 17β- 1 uG 17β- mg Example No. 100 uG cmpd estradiol estradiol Vehicle Tamoxifen 71.4 mg N/A 98.2 mg 42.7 mg No. 85 41.1 mg 92.4 mg 94.4 mg 26.6 mg No. 94 28.1 mg 93.7 mg 88.5 mg 22.3 mg No. 97 27.4 mg 24.3 mg 63.2 mg 30.7 mg No. 98 29.4 mg 27.9 mg 94.1 mg 35.9 mg No. 100 59.9 mg 68.7 mg 91.9 mg 23.4 mg No. 101 65.1 mg 71.0 mg 113.7 mg  27.7 mg No. 122 46.7 mg 38.7 mg 103.4 mg  30.3 mg No. 123 39.2 mg 61.4 mg 94.4 mg 26.1 mg No. 138 28.4 mg 37.9 mg 93.9 mg 24.6 mg No. 139 30.4 mg 45.0 mg 82.1 mg 20.5 mg No. 168 43.2 mg 81.7 mg 98.9 mg 25.5 mg

Method No. 20 6-Week Ovariectomized Rat Model

Female Sprague Dawley CD rats, ovx or sham ovx, were obtained 1 day after surgery from Taconic Farm (weight range 240-275 g). They were housed 3 or 4 rats/cage in a room on a 14/10 (light/dark) schedule and provided with food (Purina 500 rat chow) and water ad libitum. Treatment for all studies began 1 day after the animals arrival and dosed 5 or 7 days per week as indicated for 6 weeks. A group of age matched sham operated rats not receiving any treatment served as an intact, estrogen replete control group for each study. All treatments were prepared in 1% between 80 in normal saline at defined concentrations so that the treatment volume was 0.1 mL/100 g body weight. 17-beta estradiol was dissolved in corn oil (20 uG/mL) and delivered subcutaneously; 0.1 mL/rat. All dosages were adjusted at three week intervals according to group mean body weight measurements.

Five weeks after the initiation of treatment and one week prior to the termination of the study, each rat was evaluated for bone mineral density (BMD). The BMD's of the proximal tibiae (PT) and fourth lumbar vertabrae (L4) were measured in anesthetized, rats using a dual energy X-ray absorptiometer (Eclipse XR-26, Norland Corp. Ft. Atkins, Wis.). The dual energy X-ray absorptiometer (DXA) measurements for each rat were performed as follows: Fifteen minutes prior to DXA measurements, the rat was anesthetized with an intraperitoneal injection of 100 mg/kg ketamine (Bristol Laboratories, Syracuse, N.Y.) and 0.75 mg/kg acepromazine (Aveco, Ft. Dodge, Iowa). The rat was placed on an acrylic table under the DXA scanner perpendicular to its path; the limbs were extended and secured with paper tape to the surface of the table. A preliminary scan was performed at a scan speed of 50 mm/second with a scan resolution of 1.5 mm×1.5 mm to determine the region of interest in PT and L4. Small subject software was employed at a scan speed of 10 mm/second with resolution of 0.5 mm×0.5 mm for final BMD measurements. The software allows the operator to define a 1.5 cm wide area to cover the total length of L4. The BMDs for respective sites were computed by the software as a function of the attenuation of the dual beam (46.8 KeV and 80 KeV) X-ray generated by the source underneath the subject and the detector travelling along the defined area above the subject. The data for BMD values (expressed in g/cm2) and individual scans were stored for statistical analysis. One week after BMD evaluation the rats were sacrificed by carbon dioxide suffocation and blood collected for cholesterol determination. The uteri were removed and the weights taken. Total choleserol is determined using a Boehringer-Mannheim Hitachi 911 clinical analyzer using the Cholesterol/HP kit. Statistics were compared using one-way analysis of variance with Dunnet's test.

TABLE 18 6-Week Ovariectomized Rat Study Of Example No. 98 BMD (mg/cm²)^(a,b) Body Uterine Proximal Weight Weight Cholesterol Treatment Tibia L₄ (g)^(a,c) (mg)^(a,c) (mg/dl)^(a,c) Study^(d) Sham (Intact) 0.211** ± 0.003 0.183* ± 0.003  43.0* ± 6.0  426.4** ± 25.0 71.6** ± 5.0 Vehicle (Ovx)  0.189 ± 0.004 0.169 ± 0.004 62.7 ± 8.2  118.2 ± 7.8  87.2 ± 3.0 Example No. 98 0.3 mg/kg, p.o. 0.210** ± 0.003 0.173 ± 0.003 46.8 ± 6.6  149.3 ± 4.4 59.0** ± 2.2 Raloxifene 0.207** ± 0.006 0.170 ± 0.003 25.3** ± 5.4  191.6** ± 9.3  55.0** ± 2.4 3 mg/kg, p.o. 17β-Estradiol 0.224** ± 0.004 0.169 ± 0.004 33.1** ± 4.9  426.0** ± 18.4  95.5 ± 3.9 2 μg/rat, s.c. ^(a)Mean ± SEM ^(b)Following 5 weeks of treatment ^(c)Following 6 weeks of treatment ^(d)Daily treatment ×7 days/week ×6 weeks *p < 0.05 vs corresponding Vehicle value **p < 0.01 vs corresponding Vehicle value 

The invention claimed is:
 1. A pharmaceutical composition comprising an oral dosage comprising a tablet or capsule for the treatment of post-menopausal syndrome comprising conjugated estrogens, in the amount of about 0.3 mg, to about 2.5 mg and 1-[4-(2-Azepan-1-yl-ethoxy)-benzyl]-2-(4-hydroxy-phenyl)-3-methyl-1H-indol-5-ol or a pharmaceutically acceptable salt thereof, in the amount of from about 1 mg to about 150 mg, and a pharmaceutically acceptable carrier or excipient. 